If the compound is ionic, it consists of a metal and a nonmetal. In this case, we write the symbol of the metal first, followed by the symbol of the nonmetal.
If the compound is molecular, it consists of nonmetals only. In this case, we use prefixes to indicate the number of atoms of each element. For example, if we have a compound formed between carbon (C) and oxygen (O), we write CO2 as the chemical formula.
To determine if the compound is ionic or molecular, we need to know the elements present in the compound. If it contains a metal and a nonmetal, it is ionic. If it consists of nonmetals only, it is molecular.
To know more about that compound visit:
https://brainly.com/question/14117795
#SPJ11
when two liquids are mixed together, a solid forms and settles on the bottom of the container. what can be concluded?
From mixing of the two liquids, we can conclude that a chemical change has taken place forming the solid that settles on the bottom of the container.
Generally, a white substance is created when two clear liquids are combined. The chemical reaction between the reactants creates this substance, forming an insoluble precipitate. The two reactants have undergone a chemical transformation that results in the precipitate's formation. The process of reactants producing an insoluble precipitate is called precipitation.
A precipitation reaction is when two or more dissolved substances combine to form one (or more) solid products. These kinds of reactions, which are also sometimes known as double displacement, double replacement, or metathesis reactions, frequently involve the exchange of ions between ionic compounds in aqueous solutions.
To know more about precipitation, refer to the following link:
https://brainly.com/question/14330965
#SPJ4
A student was comparing two samples with an equal number of carbon atoms. One sample contained only Carbon-12 atoms. One sample contained only Carbon-14 atoms, which contain two more neutrons than Carbon-12 atoms. The student measured the mass of each sample and testing the reactivity of each sample.
Required:
What would best describe the results of the investigation?
Answer:
3.14
Explanation:
A student was comparing two samples with an equal number of carbon atoms. One sample contained only Carbon-12 atoms. One sample contained only Carbon-14 atoms, which contain two more neutrons than Carbon-12 atoms. The student measured the mass of each sample and testing the reactivity of each sample.
Required:
What would best describe the results of the investigation?
Atoms of different element can not have same atomic number because only same type of atoms combine to form element. Atoms belonging to different element can have different atomic number. Therefore, chemical characteristics will stay the same.
What is element?Element generally consist of atoms or we can atoms combine to form element. Atoms of an element is always same, means all the properties of all atoms of one type of element is same. Two or more than two atoms with different physical or chemical properties can not combine together to form an element.
Despite having a larger mass than a sample of carbon-12, carbon-14 has the same level of reactivity. C-14 is heavier than C-12 because it has two more neutrons. The chemical characteristics will stay the same, though.
Therefore, chemical characteristics will stay the same.
To know more about element, here:
https://brainly.com/question/8460633
#SPJ5
How many grams of rubber stoppers would be needed to contain the same number of stoppers as there are corks in 1.0 kg of corks?
The weight of each stopper can vary based on the material, size, and manufacturing process used, so it is not possible to determine the number of rubber stoppers needed without more information.
What is weight and average weight?Weight is a measure of the force of gravity on an object and is typically measured in units of Newtons (N), pounds (lb), or kilograms (kg).
Average weight, on the other hand, refers to the sum of the weights of a group of objects divided by the number of objects in the group. It provides an estimate of the typical or central value of the weights in the group. The units of average weight are the same as the units used to measure weight.
The number of rubber stoppers needed to contain the same number of stoppers as there are corks in 1.0 kg of corks would depend on the average weight of each type of stopper.
The weight of each stopper can vary based on the material, size, and manufacturing process used, so it is not possible to determine the number of rubber stoppers needed without more information.
Learn more on average weight here https://brainly.com/question/26952238
#SPJ1
A 170 cmº cup of coffee cools from 88°C to the 20°C temperature of the room. Assume that the temperature of the room does not change and coffee has the same specific heat and density as water. What is the entropy change of the coffee? Express your answer with the appropriate units. MÅ ? AS cofee = Value Units What is the entropy change of the room? Express your answer with the appropriate units. o H ? A Sroom = Value Units What is the entropy change of the universe? Express your answer to two significant figures and include the appropriate units. HA ? AS universe Value Units
The entropy change of the universe is zero, which is consistent with the second law of thermodynamics. Therefore, the entropy of the universe remains constant or the change in entropy is zero.
Answer:AScoffee = -1.71 J/K, ASroom = 1.71 J/K, ASuniverse = 0.
According to the second law of thermodynamics, entropy of an isolated system always increases. In the given question, we need to calculate the entropy change of coffee, room, and universe. Let's solve this problem.
Given: Mass of coffee = 170 g (density of water = 1 g/cm³)
Specific heat of coffee = specific heat of water = 4.18 J/(g·°C)
Temperature of coffee = 88°C
Temperature of room = 20°C
The initial temperature of coffee = 88°C
The final temperature of coffee = 20°C
Change in temperature of coffee (ΔT) = final temperature - initial temperature = 20°C - 88°C = -68°C
Let's calculate the entropy change of coffee. Entropy change of coffee:
AScoffee = -[170 g/(1000 g/1 kg)](4.18 J/(g·°C))ln[(20°C + 273 K)/(88°C + 273 K)]
AScoffee = -[0.17 kg](4.18 J/(g·°C))ln(293 K/361 K)
AScoffee = -1.71 J/K
Now, let's calculate the entropy change of the room. The change in entropy of the room would be equal and opposite to the change in entropy of coffee (based on the principle of energy conservation).
ASroom = -AScoffeeASroom = 1.71 J/K
The entropy change of the universe would be the sum of entropy change of coffee and entropy change of the room.
ASuniverse = AScoffee + ASroomASuniverse = -1.71 J/K + 1.71 J/KA
Suniverse = 0
The entropy change of the universe is zero, which is consistent with the second law of thermodynamics. Therefore, the entropy of the universe remains constant or the change in entropy is zero.
Answer:AScoffee = -1.71 J/K, ASroom = 1.71 J/K, ASuniverse = 0.
To know more about entropy change visit:
https://brainly.com/question/28244712
#SPJ11
An electron will emit energy in quanta when its energy state changes from 4p to
A)
55
B)
бр
C)
5p
D)
35
An electron will emit energy in quanta when its energy state changes from 4p to 3s.
When a quantum mechanical system or particle is bound, or spatially constrained, it can only take on specific discrete energy values, or energy levels. As opposed to classical particles, which can have any energy level, this. The phrase can also refer to the energy levels of nuclei or the vibrational or rotational energy levels in molecules. The term is most frequently used to describe the energy levels of the electrons in atoms, ions, or molecules that are confined by the electric field of the nucleus. A system with such distinct energy levels is said to have a quantized energy spectrum.
An electron shell, also known as a primary energy level, is the orbit of one or more electrons around the nucleus of an atom in chemistry and atomic physics. The "1 shell" (also known as the "K shell") is the shell that is closest to the nucleus. The "2 shell" (also known as the "L shell"), "3 shell" (also known as the "M shell"), and so forth are the shells that are further and more away from the nucleus. The shells are either labelled alphabetically with X-ray notation letters or with the primary quantum numbers (n = 1, 2, 3, 4...) (K, L, M, N...).
To know more about energy state click here:
https://brainly.com/question/13818669
#SPJ4
how is burning gasoline in an automobile engine part of the carbon cycle?
Burning gasoline in an automobile engine is part of the carbon cycle as the gasoline contains carbon that is released into the atmosphere as carbon dioxide, which is then taken up by plants during photosynthesis.
When gasoline is burned in an automobile engine, the carbon in the gasoline is converted into carbon dioxide gas, which is released into the atmosphere. This carbon dioxide then becomes available to plants during photosynthesis, where it is used to create organic compounds such as sugars and starches. This process is a part of the carbon cycle, which is the natural process by which carbon is cycled through the Earth's atmosphere, oceans, and land. The carbon cycle is essential for life on Earth, as it allows carbon to be used and reused by living organisms in a sustainable way.
To know more about gasoline, here
brainly.com/question/14428330
#SPJ4
Which of the following is NOT a product of photosynthesis?
A. Glucose
B. Energy
C. Oxygen
D. Carbon dioxide
The rate law for a reaction can be derived from the: Select the correct answer below: O stoichiometry of the overall reaction stoichiometry of the rate-determining step O molecularity of the overall reaction O none of the above
The rate law for a reaction can be derived from the stoichiometry of the rate-determining step.
The rate law is an equation that tells how the rate of a reaction depends on the concentration of each species present. A rate equation is a chemical expression that relates the rate of reaction to the concentration of reactants. The stoichiometry of the rate-determining step, and therefore the reaction's rate law, is determined by experimental data.
Here are some factors to consider in determining the rate law experimentally:i. Each reactant's initial concentration is changed.ii. The reaction's rate is determined.iii. The effect of each reactant's concentration change on the reaction's rate is determined.iv. This information is utilized to determine the reaction's rate law.
To know more about stoichiometry visit:
https://brainly.com/question/28780091
#SPJ11
The rate law for a reaction can be derived from the stoichiometry of the rate-determining step.
Explanation:The correct answer is stoichiometry of the rate-determining step. The rate law for a reaction describes the relationship between the rate of the reaction and the concentrations of the reactants. It can be determined experimentally by measuring the rate of the reaction at different reactant concentrations. The stoichiometry of the rate-determining step, which is the slowest step in the reaction mechanism, determines the rate law.
Learn more about Rate law here:https://brainly.com/question/35884538
#SPJ12
what mass (in grams) of NH4Cl is needed to prepare 350 mL of a 0.25 M ammonium chloride solution
Answer:
4.70 grams of NH4Cl is needed to prepare 350 mL of a 0.25 M ammonium chloride solution.
We need approximately 4.68 grams of NH4Cl to prepare a 0.25 M ammonium chloride solution with a volume of 350 mL.
To determine the mass of NH4Cl needed to prepare the solution, we us use the formula:
m=M x V x MM ... (i)
where,
m= mass in grams
M=molarity of solution
MM= molar mass of compound
V= volume in litres
The number of moles of NH4Cl needed can be calculated using:
Moles = Molarity x Volume ...(ii)
Moles = 0.25 mol/L x 0.350 L
Moles = 0.0875 mol
Hence we can replace M x V with number of moles in equation i.
The molar mass of NH4Cl is :
Molar mass of NH4Cl = (1 x 14.01 g/mol) + (4 x 1.01 g/mol) + (1 x 35.45 g/mol)
Molar mass of NH4Cl = 53.49 g/mol
We have all the variables
Putting them in equation i.
Hence,
Mass (g) = Moles x Molar mass
Mass (g) = 0.0875 mol x 53.49 g/mol
Mass (g) = 4.68 g
Therefore, you would need approximately 4.68 grams of NH4Cl to prepare a 0.25 M ammonium chloride solution with a volume of 350 mL.
To learn more about Stoichiometry,
https://brainly.com/question/16060223
use standard reduction potentials to calculate the standard free energy change in kj for the following reaction: 2fe3 (aq) pb(s)2fe2 (aq) pb2 (aq)
The standard free energy change in kJ for the reaction 2Fe³⁺(aq) + Pb(s) → 2Fe²⁺(aq) + Pb²⁺(aq) is 128.8 kJ.
To determine the standard free energy change in kJ for the reaction 2Fe³⁺(aq) + Pb(s) → 2Fe²⁺(aq) + Pb²⁺(aq), we must follow these steps.
1. The given redox reaction can be represented as 2Fe³⁺(aq) + Pb(s) → 2Fe²⁺(aq) + Pb²⁺(aq)
2. The half-reactions can be represented as:
Fe³⁺(aq) + e⁻ → Fe²⁺(aq) ..... (Reduction)
Pb²⁺(aq) + 2e⁻ → Pb(s) ........ (Oxidation)
For Fe³⁺ → Fe²⁺, E° = +0.77 V
Pb²⁺ → Pb, E° = -0.13 V
On reversing the oxidation reaction, the standard reduction potential value also changes in sign.
2Pb(s) → 2Pb²⁺(aq) + 4e⁻ ..... (Reverse of oxidation)
Pb²⁺(aq) + 2e⁻ → Pb(s) .......... (Oxidation)
Here, the standard reduction potential value is: -[-0.13] V = +0.13 V
Using the Nernst equation:
Ecell = E°cell - (0.0592/n) log(Q)
In standard conditions, the reaction quotient Q = 1.
Ecell = E°cell - (0.0592/n) log(1)
Ecell = E°cell
At equilibrium, ΔG = -nFE = -nFE°cell
Using the values in the equation,
-nFE°cell = -2 × 96500 × (0.77 - 0.13) joules
Dividing by 1000 to convert the value into kJ:
nFE°cell = 128.8 kJ
Thus, the standard free energy change in kJ for the given reaction is 128.8 kJ.
Learn more about standard free energy change: https://brainly.com/question/28599199
#SPJ11
Consider the following reaction: 3Fe(s) + 4H₂O(g) ➞ Fe₃O₄(s) + 4H₂(g). To answer the following question: "How many moles of hot water vapor (steam) must react to produce 275 g of Fe₃O₄?" How many steps will it take to get the answer? *
4 points
1
2
3
4
Answer: 2
Explanation:
To calculate the moles :
\(\text{Moles of solute}=\frac{\text{given mass}}{\text{Molar Mass}}\)
\(\text{Moles of} Fe_3O_4=\frac{275g}{233.5g/mol}=1.18moles\)
\(3Fe(s)+4H_2O(g)\rightarrow Fe_3O_4(s)+4H_2(g)\)
According to stoichiometry :
1 mole of \(Fe_3O_4\) are produced by = 4 moles of \(H_2O\)
Thus 1.18 moles of \(Fe_3O_4\) will be produced by=\(\frac{4}{1}\times 1.18=4.72moles\) of \(H_2O\)
Mass of \(H_2O=moles\times {\text {Molar mass}}=4.72moles\times 18g/mol=85.0g\)
Thus 85.0 g of \(H_2O\) will be required and 2 steps are required to get the answer.
A sample of a substance with a mass of 85g occupies a volume of 110cm. What is the density
The density of the substance is 0.77 g/cm³.
The density of a substance is calculated by dividing its mass by its volume. In this case, the mass of the substance is 85g and the volume is 110cm³.
Density = Mass / Volume
Density = 85g / 110cm³
To obtain the answer, we divide 85g by 110cm³.
Calculating the division, we find that the density of the substance is approximately 0.77 g/cm³.
Therefore, the density of the substance is 0.77 g/cm³.
You can learn more about density at
https://brainly.com/question/1354972
#SPJ11
An Assay Question
THE FUNDAMENTAL NATURE OF STRATEGIC MANAGEMENT REQUIRES THE AWARENESS & UNDERSTANDING OF OUTSIDE FORCES & ENCOURAGES STRATEGIC MANAGERS TO ADOPT NEW IDEAS .
ELABORATE in one word ?
The fundamental nature of strategic management requires the awareness & understanding of outside forces & encourages strategic managers to adopt new ideas is known as Adaptation.
Three definitions of adaptability are connected. First, natural selection, a dynamic evolutionary process, adapts organisms to their environments, improving their evolutionary fitness. Second, it is a state that the populace has attained along that process. Thirdly, it is a phenotypic characteristic or adaptive trait that has been preserved and has evolved via natural selection and has a functional purpose in each individual organism.
History has recorded descriptions of adaptation going back to the time of the ancient Greek philosophers Empedocles and Aristotle. Natural theology of the 18th and 19th centuries saw adaptation as proof of the presence of a deity.
To know more about Adaptation
https://brainly.com/question/31886336
#SPJ11
What should the IUPAC name for a binary covalent compound lack? prefixes Roman numerals an -ide ending the name of a nonmetal.
The IUPAC name for a binary covalent compound will lack roman numerals.
Binary covalent compound comprises of two elements which forms a
compound through the sharing of electrons.
The sharing of electrons is referred to as covalent bonding and naming such
compounds require prefixes such as mono-, di- , tri- etc.
The standard method of naming these compounds should be with the
prefixes and not with the roman numerals.
An example is carbon(IV)oxide which is wrong in IUPAC naming.
Read more on https://brainly.com/question/16731560
Answer:
B
Explanation:
Just did the test on edge 2021
Calculate the mass of ammonium sulfide (nh4)2s in 3.00 l of a 0.0200 m solution. g (nh4)2s
Taking into account the definition of molarity, 4.08 grams of ammonium sulfide are present in 3.00 L of a 0.0200 M solution.
Definition of molarityMolar concentration or molarity is a measure of the concentration of a solute in a solution and indicates the number of moles of solute that are dissolved in a given volume.
The molarity of a solution is calculated by dividing the moles of solute by the volume of the solution:
\(Molarity=\frac{number of moles}{volume}\)
Molarity is expressed in units \(\frac{moles}{liter}\).
Mass of ammonium sulfideIn this case, you know:
Molarity: 0.0200 Mnumber of moles: ?volume: 3 LReplacing in the definition of molarity:
\(0.0200 \frac{moles}{liter}=\frac{number of moles}{3 L}\)
Solving:
0.0200 \(\frac{moles}{liter}\)× 3 L= number of moles
0.06 moles= number of moles
On the other side, the molar mass is the amount of mass that a substance contains in one mole. In this case, the molar mass of ammonium sulfide is 68 g/mole.
Then, the amount of mass contained in 0.06 moles is calculated as:
0.06 moles×\(\frac{68 grams}{1 mole}\)= 4.08 grams
Finally, 4.08 grams of ammonium sulfide are present in 3.00 L of a 0.0200 M solution.
Learn more about
molarity:
brainly.com/question/9324116
brainly.com/question/10608366
brainly.com/question/7429224
molar mass:
brainly.com/question/5216907
brainly.com/question/11209783
brainly.com/question/7132033
brainly.com/question/17249726
#SPJ4
Answer:
4.09 is the correct answer.
They resist, but do not stop, change in the body fluids. They essentially minimize the change in pH that occurs with varying H+ concentrations. What is the function of buffers?
The function of buffers is to resist changes in pH in the body fluids.
What are the function of buffers?Buffers are able to minimize the impact of varying H+ concentrations by absorbing or releasing hydrogen ions as necessary, in order to maintain a stable pH. While buffers may not be able to completely stop changes in body fluids, they help to regulate pH levels and prevent extreme shifts that could be harmful to bodily processes. The function of buffers is to resist, but not completely stop, changes in the pH of body fluids. Buffers essentially minimize the change in pH that occurs with varying H+ concentrations, helping to maintain a stable pH level in the body.
To know more about Buffers:
https://brainly.com/question/22821585
#SPJ11
40. 0% carbon, 6. 7% hydrogen, and 53. 3% oxygen with a molecular mass of 60. 0 g/mol. What is the molecular formula of the unknown compound?
The molecular formula of the unknown compound is C2H2O2.
To determine the molecular formula of the unknown compound, we need to calculate the empirical formula first and then find the multiple of its subscripts to obtain the molecular formula.
Given:
Percentage of carbon = 40.0%
Percentage of hydrogen = 6.7%
Percentage of oxygen = 53.3%
Molecular mass = 60.0 g/mol
Step 1: Convert the percentages to grams.
Assuming we have 100 grams of the compound:
Mass of carbon = 40.0 g
Mass of hydrogen = 6.7 g
Mass of oxygen = 53.3 g
Step 2: Convert the masses to moles using the molar masses of the elements.
Molar mass of carbon = 12.01 g/mol
Molar mass of hydrogen = 1.008 g/mol
Molar mass of oxygen = 16.00 g/mol
Number of moles of carbon = Mass of carbon / Molar mass of carbon
= 40.0 g / 12.01 g/mol
= 3.332 mol
Number of moles of hydrogen = Mass of hydrogen / Molar mass of hydrogen
= 6.7 g / 1.008 g/mol
= 6.648 mol
Number of moles of oxygen = Mass of oxygen / Molar mass of oxygen
= 53.3 g / 16.00 g/mol
= 3.331 mol
Step 3: Determine the empirical formula by dividing the moles by the smallest value.
Dividing the moles of carbon, hydrogen, and oxygen by 3.331 gives approximately 1 for each element.
So, the empirical formula of the compound is CHO.
Step 4: Determine the multiple of the subscripts to obtain the molecular formula.
To find the multiple, we divide the molecular mass by the empirical formula mass.
Molecular mass = 60.0 g/mol
Empirical formula mass = (12.01 g/mol) + (1.008 g/mol) + (16.00 g/mol) = 29.018 g/mol
Multiple = Molecular mass / Empirical formula mass
= 60.0 g/mol / 29.018 g/mol
= 2.07
Rounding to the nearest whole number, we get 2.
Therefore, the molecular formula of the unknown compound is C2H2O2.
learn more about molecular here
https://brainly.com/question/30640129
#SPJ11
A container has an unknown quantity of gas at a pressure of 121.6kPa, a volume of 31L and a temperature of 87oC. How many moles of gas are present ?
Answer:
1.26mol
Explanation:
Using the general gas law equation;
PV = nRT
Where;
P = pressure (atm)
V = volume (L)
n = number of moles (mol)
R = gas law constant (0.0821 Latm/molK)
T = temperature (K).
Based on the information provided in this question,
P = 121.6kPa = 121.6 × 0.00987atm = 1.2001 atm
V = 31L
T = 87°C = 87 + 273 = 360K
R = 0.0821 Latm/molK
Using PV = nRT
n = PV/RT
n = (1.2001 × 31) ÷ (0.0821 × 360)
n = 37.2031 ÷ 29.556
n = 1.258
n = 1.26mol
An unfolded protein (U) can either fold into the native state (N) or misfold and aggregate (A). Both processes obey first order kinetics. The concentration of [N]/[A] is 9. The effective rate constant, keff, is 8 sec-1. What is the rate constant for folding and what is the rate constant for aggregation?
The rate constant for folding is kF = 36 sec^-1 and the rate constant for aggregation is kA = 0.44 sec^-1.
We can use the following equations to determine the rate constants for folding (kF) and aggregation (kA):
kF[U] = keff[N]
kA[U] = keff[A]
where [U], [N], and [A] are the concentrations of the unfolded, native, and aggregated states, respectively.
We are given that [N]/[A] = 9, which means that [N] = 9[A]. We can use this relationship to eliminate [N] in the equation for kF:
kF[U] = keff[N]
kF[U] = keff[9A]
kF[U] = 9keff[A]
Similarly, we can eliminate [A] in the equation for kA:
kA[U] = keff[A]
Now, we need to find the concentration of [A] and [N]. We can use the law of mass action to write the following equations:
kF[U] = kA[U] + keff[N]
[U]tot = [N] + [A] + [U]
where [U]tot is the total concentration of unfolded protein.
We can solve these equations for [A] and [N]:
[A] = [U]tot / (1 + kF/kA + keff/kA)
[N] = 9[A]
Substituting these expressions into the equation for kF and simplifying, we get:
kF = 9keff[A]/[U]tot
= 9keff / (1 + kF/kA + keff/kA)
Solving this equation for kF gives:
kF = 36 sec^-1
Substituting this value into the equation for kA, we get:
kA = keff / [A]
= keff / ([U]tot / (1 + kF/kA + keff/kA))
= keff / ([U]tot / (1 + 36/kA + 8/kA))
Solving this equation for kA gives:
kA = 0.44 sec^-1
For more such questions on rate constant
https://brainly.com/question/24749252
#SPJ11
If 7.0 mol sample of a gas has a volume of 12.2 L, what would the volume be if the amount of gas was increased to 16.8 mol
Answer:
\(V_{2} = 29.28\,L\)
Explanation:
Let assume that gas behaves ideally and experiments an isobaric and isothermal processes. The following relationship is applied to determined the final volume:
\(\frac{V_{1}}{n_{1}} = \frac{V_{2}}{n_{2}}\)
\(V_{2} = V_{1} \cdot \left(\frac{n_{2}}{n_{1}} \right)\)
\(V_{2} = (12.2\,L)\cdot \left(\frac{16.8\,moles}{7\,moles} \right)\)
\(V_{2} = 29.28\,L\)
Consider the chemical equation.
CuCl2 + 2NaNO3 Right arrow. Cu(NO3)2 + 2NaCl
What is the percent yield of NaCl if 31.0 g of CuCl2 reacts with excess NaNO3 to produce 21.2 g of NaCl?
Use Percent yield equals StartFraction actual yield over theoretical yield EndFraction times 100..
49.7%
58.4%
63.6%
78.7%
Percent yield = 78.7% , the correct answer is D) 78.7%, which represents the percent yield of NaCl in the reaction.
To calculate the percent yield of NaCl in the given chemical equation, we need to compare the actual yield of NaCl with the theoretical yield. The theoretical yield is the amount of NaCl that would be produced if the reaction went to completion based on stoichiometry.
First, we need to determine the theoretical yield of NaCl. By examining the balanced equation, we can see that the stoichiometric ratio between CuCl2 and NaCl is 1:2. This means that for every 1 mole of CuCl2, 2 moles of NaCl are produced.
Step 1: Convert the mass of CuCl2 to moles using its molar mass.
Molar mass of CuCl2 = 63.55 g/mol (atomic mass of Cu) + 2 × 35.45 g/mol (atomic mass of Cl)
Molar mass of CuCl2 = 134.45 g/mol
Moles of CuCl2 = 31.0 g / 134.45 g/mol ≈ 0.231 mol
Step 2: Use the stoichiometry to calculate the theoretical yield of NaCl.
Since the stoichiometric ratio between CuCl2 and NaCl is 1:2, the moles of NaCl produced will be twice the moles of CuCl2.
Moles of NaCl (theoretical) = 2 × 0.231 mol = 0.462 mol
Step 3: Convert the moles of NaCl to grams using its molar mass.
Molar mass of NaCl = 22.99 g/mol (atomic mass of Na) + 35.45 g/mol (atomic mass of Cl)
Molar mass of NaCl = 58.44 g/mol
Theoretical yield of NaCl = 0.462 mol × 58.44 g/mol ≈ 26.96 g
Now, we can calculate the percent yield using the formula:
Percent yield = (Actual yield / Theoretical yield) × 100
Percent yield = (21.2 g / 26.96 g) × 100 ≈ 78.7%
Option D
For more such questions on Percent yield visit:
https://brainly.com/question/14714924
#SPJ8
Why do.we need inactive ingredients?
Answer:
Inactive ingredients are components of a drug product that do not increase or affect the therapeutic action of the active ingredient, which is usually the active drug. Inactive ingredients are added during the manufacturing process of pharmaceutical products such as tablets, capsules, suppositories, and injections
How many neutrons, electrons, and protons are in carbon?
Answer:
six protons, six neutrons, and six electrons
Explanation:
Explanation:
Six protons (because its proton number, at the bottom, is 6)
Six electrons (because the number of protons and electrons in an atom is the same)
The symbol also tells us that the total number of protons and neutrons in a carbon atom is 12. Note that you can work out the number of neutrons from the mass number and atomic number. In this example, it is 12 - 6 = 6 neutrons.
Hope I was helpful!
What is the difference between chlorine -35 and chlorine -37??
Answer:
Free chlorine involves the amount of chlorine that's able to sanitize contaminants, while combined chlorine refers to chlorine that has combined directly with the contaminants. Total chlorine is basically the sum of free chlorine and combined chlorine.
Which statement describes particles of an ideal gas, based on the kinetic molecular theory?
Answer:
There are 5 steps/rules of the ideal gases based on kinetic theory.
Explanation:
1. Particles in a gas are constant moving in random motion.
2. combined volume of the particles is negligible.
3. particles exert no forces on one another
4. any collisions between the particles are completely elastic
5. the average kinetic energy of particles is proportional to temperature in kelvins.
(I had help explaining steps from Sal Khan. I hope this helps! Have a great day!)
PLEASE HELP ---- S + 6 HNO3 --> H2SO4 + 6 NO2 + 2 H2O
In the above equation how many moles of water can be made when 85 moles of HNO3 are consumed?
2moles of H2O are made when 6moles of HNO3 are consumed
75 mole of HNO3 produces = \(\frac{2}{6}\)× 75 ⇒ 25 moles of water
Limiting Reagent Method
The limiting reagent is the reactant that is completely used up in a reaction and thus determines when the reaction stops.
S + 6 HNO3 --> H2SO4 + 6 NO2 + 2 H2O
6 mole of HNO3 produces \(\frac{2}{6}\) = 2 moles of H₂O
1 mole of HNO3 produces = mole of H₂O
∴ 75 mole of HNO3 produces = \(\frac{2}{6}\) × 75 ⇒ 25 moles of water
When an unknown substance is added to water, it breaks apart into individual molecules and diffuses. The substance is...Select one:a. a covalent compound.b. an ionic compound.c. an organic compound.d. a metallic compound.
Explanation:
A substance that breaks apart in water is either an ionic or covalent bond. However, elements of an ionic bond do not dissolve in water. Rather they react with water. Therefore, the correct answer is covalent compound.
Answer:
The correct answer is A.
how much kg is equal to what g
Answer:
1kg= 1000 grams hope it helps
one student found that 25.0cm^3 of sodium hydroxide solution was neutralised by exactly 22.30cm^3 of 0.100mol/dm^3 sulfuric acid solution. calculate the number of moles of sulfuric acid that this student used in the titration
One student found that 25.0cm³of sodium hydroxide solution was neutralized by exactly 22.30cm³ of 0.100mol/dm³sulfuric acid solution then number of moles of sulfuric acid that this student used in the titration is 4.39 mole
Titration is the process in which determining the quantity of substances by adding increment of another substances and sulfuric acid is the highly acidic therefore it is used to cleaning metals and removal of impurities from oil and it is called king of chemicals because of its direct and indirect applications in manufacture of many chemicals including fertilizers
Here given data is
Sodium hydroxide solution = 25.0cm³
Sulfuric acid solution = 22.30cm³ of 0.100mol/dm³
We have to find number of moles of sulfuric acid that this student used in the titration =?
Number of moles = mass of substances/mass of one mole
Number of moles = 98.079 g/mol/22.30cm³
Number of moles = 4.39 mole
Know more about solution
https://brainly.com/question/16885889
#SPJ1
What are the 4 ideas in Dalton's atomic model?
Dalton's atomic model, proposed by John Dalton in 1803, was one of the first scientific explanations of the nature of atoms. It is based on four key ideas: Atoms are indivisible and indestructible; Atoms of different elements have different atomic weights; Atoms of the same element are identical; Atoms combine in definite ratios to form compounds.
Atoms are indivisible and indestructible. This means that atoms cannot be broken down into smaller particles, and they cannot be created or destroyed.
Atoms of different elements have different atomic weights. This means that atoms of one element are different from atoms of another element based on their weight.
Atoms of the same element are identical. This means that all atoms of a given element have the same properties and characteristics.
Atoms combine in definite ratios to form compounds. This means that when atoms of different elements combine to form a compound, they do so in a specific ratio.
To know more about Dalton's atomic model here:
https://brainly.com/question/14364728#
#SPJ11