An ideal gas at 24.0°C and a pressure 1.80 x 105 Pa is in a container having a volume of 1.00 L. (a) Determine the number of moles of gas in the container.
b. The gas pushes against the piston, expanding twice its original volume, while the pressure falls to atmospheric pressure. Find the final temperature.
Answers
a. To determine the number of moles of gas in the container, we can use the ideal gas law:
PV = nRT
where:
P = pressure (Pa)
V = volume (L)
n = number of moles
R = ideal gas constant (8.314 J/mol K)
T = temperature (K)
We know that P = 1.80 x 105 Pa, V = 1.00 L, R = 8.314 J/mol K, and T = 24.0°C = 297.15 K. Substituting these values into the ideal gas law, we get:
(1.80 x 105 Pa)(1.00 L) = n(8.314 J/mol K)(297.15 K)
Solving for n, we get:
n = 0.068 moles
b. When the gas expands, the volume increases to 2.00 L. The pressure falls to atmospheric pressure, which is 1.013 x 105 Pa. We can use the ideal gas law again to find the final temperature:
PV = nRT
(1.013 x 105 Pa)(2.00 L) = (0.068 moles)(8.314 J/mol K)(T)
Solving for T, we get:
T = 449.9 K
This is equal to 176.8°C.
A container with a volume of 1 L contains an ideal gas at a temperature of 24.0 °C and a pressure of 1.80 x 10⁵ Pa. The container contains roughly 76.8 moles of gas. The final temperature is about 331.2 K when the gas expands to double its initial volume and the pressure decreases to atmospheric pressure.
(a) To determine the number of moles of gas in the container, we can use the ideal gas equation:
PV = nRT
Where:
P = pressure (in Pa)
V = volume (in m³)
n = number of moles
R = ideal gas constant (8.314 J/(mol·K))
T = temperature (in Kelvin)
First, let's convert the given temperature from Celsius to Kelvin:
T = 24.0°C + 273.15 = 297.15 K
Now, we can substitute the given values into the ideal gas equation and solve for n:
(1.80 x 10⁵ Pa) * (1.00 L) = n * (8.314 J/(mol·K)) * (297.15 K)
Simplifying the equation:
1.80 x 10⁵ L·Pa = 8.314 J/mol * n * 297.15 K
\(n = \frac{1.80 \times 10^5 \text{ L·Pa}}{8.314 \text{ J}/\text{mol·K} \times 297.15 \text{ K}}\)
n ≈ 76.8 mol
Therefore, there are approximately 76.8 moles of gas in the container.
(b) To find the final temperature when the gas expands to twice its original volume and the pressure falls to atmospheric pressure, we can use the combined gas law:
\(\begin{equation}\frac{P_1 V_1}{T_1} = \frac{P_2 V_2}{T_2}\)
Where:
P₁ = initial pressure
V₁ = initial volume
T₁ = initial temperature
P₂ = final pressure
V₂ = final volume
T₂ = final temperature
In this case, the final pressure is atmospheric pressure, which is typically around 1.013 x 10⁵ Pa.
The initial pressure (P₁) and volume (V₁) are given in the problem, and we can use the initial temperature (T₁) calculated in part (a).
P₁ = 1.80 x 10⁵ Pa
V₁ = 1.00 L
T₁ = 297.15 K
V₂ is twice the initial volume, so V₂ = 2.00 L.
Now, we can rearrange the combined gas law equation and solve for T₂:
\(\begin{equation}T_2 = \frac{P_2 V_2 T_1}{P_1 V_1}\)
Substituting the given values:
\(T_2 = \frac{(1.013 \times 10^{5} \text{ Pa})(2.00 \text{ L})(297.15 \text{ K})}{(1.80 \times 10^{5} \text{ Pa})(1.00 \text{ L})}\)
\(T_2\) ≈ 331.2 K
Therefore, the final temperature when the gas expands to twice its original volume and the pressure falls to atmospheric pressure is approximately 331.2 K.
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Related Questions
TEST QUESTION PLS HELP What are isotopes? Write isotopes of three different elements, showing their atomic number and mass number. (I'll give brainliest)
Answers
Answer:
Isotopes are members of a family of an element that all have the same number of protons but different numbers of neutrons. The number of protons in a nucleus determines the element's atomic number on the Periodic Table
Explanation:
Hope this helps some? :)
A total of 1.436 F of electricity (1 F=1 mol e−) was required to electrodeposit all of the Zn and Co from a solution of ZnSO4 and CoSO4. The mixture of Zn and Co that was deposited had a mass of 43.57 g. Calculate the masses of ZnSO4 and CoSO4 present in the original solution.
Answers
There were approximately 128.94 g of ZnSO4 and 109.34 g of CoSO4 present in the original solution.
What is electroplating?Electroplating is the process of coating a metal object with a thin layer of another metal by means of electrolysis. In an electrolytic cell with a solution of a salt of the metal to be deposited, the item to be plated is made the cathode (negative electrode).
The electroplating of Zn and Co from the solution involves the transfer of electrons from the cathode to the metal ions in the solution, which results in the deposition of the metals on the cathode. The amount of electricity required for this process is proportional to the amount of metal ions present in the solution, which in turn is proportional to the mass of the metals deposited.
Let's first calculate the moles of electrons transferred in the electroplating reaction:
1.436 F × (1 mol e⁻/1 F) = 1.436 mol e⁻
Since the number of electrons transferred is the same for both Zn and Co, the ratio of the moles of Zn and Co deposited should be the same as the ratio of their atomic masses. The atomic masses of Zn and Co are 65.38 g/mol and 58.93 g/mol, respectively, so the ratio of their masses is:
65.38 g/mol ÷ 58.93 g/mol ≈ 1.11
This means that for every 1.11 moles of Zn deposited, 1 mole of Co is deposited.
Let's assume that x moles of ZnSO4 and y moles of CoSO4 were present in the original solution. Then we can set up the following equations based on the balanced electroplating reaction:
2 e⁻ + Zn²+ → Zn (s)
2 e⁻ + Co²+ → Co (s)
The total number of moles of electrons transferred in the electroplating reaction is:
1.436 mol e⁻ = 2 mol e⁻/mol Zn × x mol ZnSO4 + 2 mol e⁻/mol Co × y mol CoSO4
Simplifying and solving for y:
y = (1.436 mol e⁻ - 2 mol e⁻/mol Zn × x mol ZnSO4) / (2 mol e⁻/mol Co)
y = 0.718 mol CoSO4
Since the ratio of the moles of Zn to Co deposited is 1.11, we can calculate the moles of ZnSO4 from the moles of CoSO4:
x = (1.11 mol Zn/mol Co) × (0.718 mol CoSO4) = 0.798 mol ZnSO4
Finally, we can calculate the masses of ZnSO4 and CoSO4:
mass of ZnSO4 = 0.798 mol × 161.47 g/mol = 128.94 g
mass of CoSO4 = 0.718 mol × 152.06 g/mol = 109.34 g
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Nomex, a condensation copolymer used by firefighters because of its flame-resistant properties, is formed between isophthalic acid and m-aminoaniline
Draw the structure of the dimer. (Hint: Water is eliminated when the bond between the monomers forms. )
Draw the molecule by placing atoms on the grid and connecting them with bonds. Include all hydrogen atoms
Answers
The structure of the dimer of Nomex is as follows:
To draw the structure of the dimer, we first need to draw the structure of the two monomers, isophthalic acid and m-aminoaniline:
Next, we need to eliminate a water molecule from the two monomers to form the dimer. This is done by removing a hydrogen atom from the amino group of m-aminoaniline and a hydroxyl group from isophthalic acid:
Finally, we can connect the two monomers together to form the dimer of Nomex:
This is the structure of the dimer of Nomex, which is a condensation copolymer formed between isophthalic acid and m-aminoaniline.
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Write the formula for silicon pentabromide.
Answers
That would be SiBr4, hope this helps ^^
Silicon pentabromide has the formula SiBr₅ . It is a covalent compound formed by electron sharing between Si and Br atoms.
What is silicon pentabromide?Silicon pentabromide is a covalent compound formed by sharing of electrons between Si and Br atoms. Silicon is 14th group element and it has 4 valence electrons. It needs 4 more electrons to achieve octet.
Br is 17th group element having 7 valence electrons. It needs 1 more electron to achieve octet. Thus, it combines with other atoms by gaining or sharing electrons.
The compound SiBr₅ is in fact does not exist. Because Si does not have 5 electrons in its valence shell to share with each Br. But Br can share its one electron with Si, and Si will gain 9 electrons in its valence shell and thus deviates from rule of octet.
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When do scientists believe matter formed
Answers
84 pt =_____ qt
5.0 gal =_____ L
Answers
Answer:
84 pt =__50.4399___ qt
5.0 gal =___18.9271__ L
Explanation:
Have A Wonderful Day!!
Answer: 84 pints = 42 quarts
5.9 gallons = 1.89271
Explanation:
What is the ph at the equivalence point for the titration of 20. 00 ml of 0. 0250 m formic acid, pka = 3. 74, with standard 0. 0250 m naoh? assume the activity coefficients are equal to 1. 0
Answers
The pH at the equivalence point for the titration of 20.00 mL of 0.0250 M formic acid with standard 0.0250 M NaOH is 3.74.
The balanced chemical equation for the reaction is:
HCOOH + NaOH → H₂O + NaHCOO⁻
Firstly, let's calculate the number of moles of formic acid in 20.00 mL of 0.0250 M formic acid.
Number of moles = concentration × volume
Number of moles = 0.0250 M × 20.00 × 10⁻³ L
Number of moles = 5.00 × 10⁻⁴ mol
The balanced chemical equation for the reaction between formic acid and NaOH tells us that one mole of formic acid reacts with one mole of NaOH to form one mole of NaHCOO⁻.
Therefore, the number of moles of NaOH required for complete neutralization of 5.00 × 10⁻⁴ mol of formic acid is also 5.00 × 10⁻⁴ mol.
As the concentration of NaOH is also 0.0250 M, the volume of NaOH required for complete neutralization can be calculated as follows;
Number of moles = concentration × volume
Volume = number of moles / concentration
Volume = (5.00 × 10⁻⁴ mol) / (0.0250 M)
Volume = 0.0200 L or 20.00 mL
So, the volume of NaOH required for complete neutralization is 20.00 mL.
The pH at the equivalence point can be calculated using the following formula;
pH = pKa + log [salt]/[acid]
Here, the salt is sodium formate (NaHCOO⁻) and the acid is formic acid (HCOOH).
At the equivalence point, the number of moles of HCOOH = number of moles of NaHCOO⁻ . Therefore, the concentration of HCOOH and NaHCOO⁻ would be the same.
Concentration of HCOOH = Number of moles / Volume = 0.0250 M
Concentration of NaHCOO- = Number of moles / Volume = 0.0250 M
Therefore, the ratio of [salt] / [acid] = 1.
Substituting the values into the formula;
pH = pKa + log [salt]/[acid]
pH = 3.74 + log 1
pH = 3.74
Therefore, the pH at the equivalence point for the titration of 20.00 mL of 0.0250 M formic acid with standard 0.0250 M NaOH is 3.74.
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a. what are the major aspects of the carbon cycle that carbon cycle? b. what role and impact does increasing methane in the atmosphere have on the temperature of the air?
Answers
It is important to address and mitigate the sources of methane emissions in order to mitigate the impacts of climate change.
A. The major aspects of the carbon cycle include the movement of carbon between the atmosphere, oceans, and land. Carbon is taken up by plants through photosynthesis, and then transferred to animals through the food chain.
When plants and animals die, their bodies decompose, and carbon is released back into the atmosphere or soil. Additionally, human activities such as burning fossil fuels and deforestation have significantly altered the carbon cycle, leading to increased levels of carbon dioxide in the atmosphere.
B. Methane is a potent greenhouse gas, meaning that it traps heat in the Earth's atmosphere and contributes to global warming. When methane is released into the atmosphere, it absorbs infrared radiation and warms the air. As the concentration of methane in the atmosphere increases, so does its impact on the temperature of the air.
This can lead to a range of negative effects, including more extreme weather patterns, rising sea levels, and the loss of biodiversity. Therefore, it is important to address and mitigate the sources of methane emissions in order to mitigate the impacts of climate change.
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For the following situations, describe the contact and non-contact forces that are involved
, a. A book sitting on a shelf
b. A soccer player kicking a ball; the ball soaring through the air and landing on the ground
C. A hiker in the woods reading her compass to determine which direction to go
d. A child on a sled; first, the child is sitting at the top of the hill, waiting his tum; then, the child pushes off and slides down the hill, eventually coming to a stop.
Btw this is asking for you to describe the contact and non contact forces involved in all the little sentences
Answers
a. A book sitting on a shelf: Contact forces: None. Non-contact forces: Gravity, which pulls the book downwards, and the normal force from the shelf, which pushes upwards on the book to counteract gravity and keep it in place.
b. A soccer player kicking a ball; the ball soaring through the air and landing on the ground:
Contact forces: The player's foot applies a force to the ball, which propels it forward. When the ball hits the ground, there is a contact force between the ball and the ground.
Non-contact forces: Air resistance, which opposes the motion of the ball through the air.
C. A hiker in the woods reading her compass to determine which direction to go:
Contact forces: None. Non-contact forces: The Earth's magnetic field, which interacts with the compass needle to indicate the direction of magnetic north.
d. A child on a sled; first, the child is sitting at the top of the hill, waiting his turn; then, the child pushes off and slides down the hill, eventually coming to a stop:
Contact forces: Friction between the sled and the ground provides the force that propels the sled forward and eventually brings it to a stop.
Non-contact forces: Gravity provides the force that pulls the sled down the hill. Air resistance also acts on the sled as it slides down the hill.
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what is the name that corresponds to the definitions of the following terms: : chemosensory organs that detect dissolved chemicals
Answers
Chemoreceptors are an important component of many physiological processes and play a key role in many behaviors, including feeding, mating, and avoidance of predators. They are also involved in the immune response and other physiological processes. In conclusion, chemoreceptors are chemosensory organs that detect dissolved chemicals.
The name that corresponds to the definition of "chemosensory organs that detect dissolved chemicals" is chemoreceptors. They are sensory receptors that detect specific chemical stimuli in the environment and transmit information to the brain for further processing.Chemoreceptors are found in a variety of organisms, including insects, crustaceans, and mammals. They are responsible for detecting chemicals that are dissolved in air, water, or other liquids. For example, in humans, the sense of taste is mediated by chemoreceptors located on the tongue that detect the presence of different chemicals in food. In contrast, chemoreceptors in the nose are responsible for detecting the presence of different odors in the air.Chemoreceptors are an important component of many physiological processes and play a key role in many behaviors, including feeding, mating, and avoidance of predators. They are also involved in the immune response and other physiological processes. In conclusion, chemoreceptors are chemosensory organs that detect dissolved chemicals.
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TP is considered to be a high energy molecule. When ATP undergoes hydrolysis to ADP, how much energy is produced?
7.3 kcal/mole is required
14.6 kcal/mole is released
7.3 kcal/mole is released
21.9 kcal/mol is released
Answers
Energy-wise, the conversion of ATP to ADP is advantageous, producing -7.3 cal/mol of Gibbs-free energy.
What volume of energy is transferred form ATP to ADP?How is the free energy generated by the ATP hydrolysis utilised for cellular activity, and how much free power is released during this process?One mole of ATP hydrolyzes into Pi and ADP with a predicted G of 7.3 kcal/mole (30.5 kJ/mol).
What occurs when ATP hydrolyzes into ADP?The process of hydrolysis releases energy and transforms ATP into adenosine diphosphate whenever one phosphate group is eliminated by rupturing a phosphoanhydride bond (ADP).
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A gas occupies a volume of 2,4 L at 144 kPa at a temperature of 290 K. What volume will the gas occupy at 300 kPa and 450 K?
Short answer word problem
Answers
The volume the gas will occupy at 300 kPa and 450 K is calculated to be 1.79 L.
How to calculate volume?The volume of a gas can be calculated using the combined gas law equation as follows:
PaVa/Ta = PbVb/Tb
Where;
Pa, Va and Ta = initial pressure, volume and temperature respectivelyPb, Vb and Tb = final pressure, volume and temperature respectivelyAccording to this question, a gas occupies a volume of 2,4 L at 144 kPa at a temperature of 290 K. The volume the gas will occupy at 300 kPa and 450 K can be calculated as follows:
144 × 2.4/290 = 300 × Vb/450
1.1917 × 450 = 300Vb
Vb = 1.79 L
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the yeastengages in photosynthesis, which produces oxygen gas, bio, quizletquizlet
Answers
The statement “the yeast engages in photosynthesis, which produces oxygen gas” is incorrect. Yeast cells do not engage in photosynthesis to produce oxygen gas.
What is photosynthesis?Photosynthesis is the process by which green plants use sunlight, carbon dioxide, and water to produce glucose (a simple sugar), which serves as food for the plant.
Oxygen is also produced during photosynthesis.Yeast:Yeast is a unicellular fungus that converts sugar into carbon dioxide and alcohol. Yeast cells respire aerobically in the presence of oxygen and anaerobically in the absence of oxygen.
However, yeast cells do not perform photosynthesis. They do not have chloroplasts or pigments that are required for photosynthesis. Therefore, yeast cells cannot produce oxygen gas.Bio quizlet:Quizlet is an online learning platform that allows users to create and share flashcards, study guides, and quizzes.
It is a great resource for studying biology and other subjects. Students can create their own study materials or use existing ones created by other users. Quizlet provides an engaging and interactive way to learn and retain information.
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WHAT IS OZONE.....................
How does it acts as safeguard?
Answers
Explanation:
The ozone layer is a natural layer of gas in the upper atmosphere that protects humans and other living things from harmful ultraviolet (UV) radiation from the sun. ... The ozone layer filters out most of the sun's harmful UV radiation and is therefore crucial to life on Earth.
What is the pH of a solution with {H+} = 2.3 x 10^-6?
A) -5.64
B) 6.00
C) 5.64
D) -0.36
correct answer is C)
Answers
The pH scale is a way to measure the acidity or basicity of a solution. pH is defined as the negative logarithm (base 10) of the hydrogen ion concentration, [H+], in moles per liter.
The higher the concentration of hydrogen ions, the lower the pH value; conversely, the lower the hydrogen ion concentration, the higher the pH value.A solution with a hydrogen ion concentration of 2.3 x 10^-6 has a pH of 5.64, according to the pH scale. The pH can be calculated using the following formula:pH = -log[H+]In this case, the hydrogen ion concentration is 2.3 x 10^-6, so the pH is:-log(2.3 x 10^-6) = 5.64Therefore, the correct answer is C) 5.64.For such more question on hydrogen ions,
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How much voltage is required to run 1.6 A of current through a 240
resistor? Use AV = IR.
O A. 380 V
O B. 6.7 x 10-3 v
O C. 150 V
O D. 2.6 x 10-3 v
Answers
Answer:
answer is not there
Explanation:
V=1.6×240
V=384volt
If you have 2.9 x 10^21 atoms of nitrogen, how many moles do you have?
Answers
Answer: Approximately \(0.48 \times 10^{-2} \ \text{ mole}\)
============================================================
Explanation:
There are roughly 6.02 * 10^23 atoms in one mole of any element. So we have 6.02 * 10^23 atoms in one mole of nitrogen.
We can then do the following conversion:
\(\left(2.9 \times 10^{21} \ \text{ atoms of nitrogen} \right)\times \left(\frac{1 \ \text{ mole}}{6.02 \times 10^{23} \ \text{ atoms}}\right)\\\\\frac{2.9 \times 10^{21}}{6.02 \times 10^{23}} \ \text{ mole}\\\\\frac{2.9}{6.02} \times 10^{21-23} \ \text{ mole}\\\\0.48172757 \times 10^{-2} \ \text{ mole}\\\\0.48 \times 10^{-2} \ \text{ mole}\\\\\)
which of the following ions is aromatic? select one: a. only ii and iii b. i, ii and iii c. only i and ii d. only ii and iv e. i, iii, and iv
Answers
The correct answer is Option d
d. only ii and iv
What is Aromatic Ion?
Chemical compounds known as aromatic compounds are those that lack individual alternating double and single bonds in favour of conjugated planar ring systems and delocalized pi-electron clouds.
They are also known as arenes or aromatics. Toluene and benzene make for the greatest examples. Huckel's rule must be followed for aromatics. The only way for creatures to obtain benzene-ring molecules is through plants and microbes. Therefore, plants and microbes create the vast majority of aromatic compounds found in nature, and animals rely either directly or indirectly on plants for the production of numerous aromatic compounds.
Aromatic hydrocarbons are hydrocarbons that have delocalized pi electrons and sigma bonds between their carbon atoms in a ring. Benzene is one illustration. They are referred to as aromatic because of their odour.
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what is the biggest chemical formula
Answers
Answer:
IUPAC name for Titin
Explanation:
The IUPAC name for Titin. This is the largest known protein and so has the longest chemical name. Written in full, it contains 189,819 letters.
the chemical reaction that generated tall of the heat in the stove was caused by the combustion of methane (CH4). this reaction raleases 808kj of energy per mole of methane. if you turned your stove on for 5 minutes an used up 38.0 (27g) of methane, how much energy did you release?
Answers
The amount of energy released would be 1917.96 kJ.
Energy released by combustionWe can start by calculating the number of moles of methane used up in the reaction:
Number of moles = mass / molar mass
molar mass of CH4 = 12.01 + 4(1.01) = 16.05 g/mol
Number of moles = 38.0 g / 16.05 g/mol = 2.37 mol (rounded to two decimal places)
Next, we can calculate the total energy released by the combustion of this amount of methane:
Energy released = energy released per mole x number of moles
Energy released = 808 kJ/mol x 2.37 mol = 1917.96 kJ (rounded to two decimal places)
Therefore, if you used up 38.0 g (or 2.37 mol) of methane in 5 minutes, you would have released approximately 1917.96 kJ of energy.
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what is the mass of 3.01x1023 atoms of iron(atomic mass of fe=56)
Answers
Answer:
mass=279grams
Explanation:
GIVEN DATA
number of atoms=3.01×10^23
avogadro's number=6.022×10^22
molar mass of iron=56g/moles
TO FIND
mass in gram of iron=?
SOLUTION
by using the formula
mass in gram=(number of atoms÷avogdro's number)×molar mass
mass=(3.01×10^23÷6.022×10^23)×56
mass=0.499×56
mass=27.9grams=28 grams
Which condition would cause surface runoff to increase in a particular location?
1. Covering a dirt road with pavement.
2. Planting grasses and shrubs on a hillside.
3. Having a decrease in the annual rainfall.
Answers
Answer:
number 1
Explanation:
Which time is refers to the substance that is dissolved into another substance such as water
Answers
Answer:
solute, im pretty sure
Explanation:
Why is it important to read over the SDS sheet before you do a lab?
Answers
Answer:
so you know what to do and you know the rules
Explanation:
Explain two ways to restore the Florida Panther population.
Answers
Answer:
Explanation: encourage your legislators to support land acquisition programs such as Florida Forever and the Rural and Family Lands Protection Program.
which of these was used by Alfred Wagner as evidence that was continents lead masses have drifted apart over time
Answers
Answer: —The processes of seafloor spreading, rift valley formation, and subduction (where heavier tectonic plates sink beneath lighter ones) were not well-established until the 1960s. These processes were the main geologic forces behind what Wegener recognized as continental drift.
Explanation:
An 18-g sample of element A combines completely with a 4-g sample of element B to form the compound AB. What is the mass of the compound formed?
Answers
Answer:
22g
Explanation:
Given parameters:
Mass of element A = 18g
Mass of element B = 4g
Unknown:
Mass of compound formed = ?
Solution:
The reaction equation is given as;
A + B → AB
According to the law of conservation of mass "in a chemical reaction, matter is neither created nor destroyed but changed from one form to another".
Simply mas is conserved and the mass of the reactants is the same as the mass of the product that forms.
Mass of reactants = mass of A + mass of B = 18g + 4g = 22g
So;
Mass of product AB = 22g
Lana drew the diagram below to model asexual reproduction. Based on Lana's diagram, which statement explains the results of asexual reproduction? A. The offspring are not genetically identical to the parent, because each offspring receives only half of the chromosomes from a single parent. B. The offspring are not genetically identical to the parents, because two parents each contribute half of their chromosomes to each offspring. C. The offspring are genetically identical to the parent, because each offspring receives a complete copy of a single parent's chromosomes. D. The offspring are genetically identical to the parents, because two parents each contribute a complete copy of their chromosomes to each offspring.
Answers
Based on Lana's diagram, the correct statement that explains the results of asexual reproduction is C. The offspring are genetically identical to the parent, because each offspring receives a complete copy of a single parent's chromosomes.
What happens in asexual reproduction?In the diagram, the parent cell divides into two identical daughter cells, each of which contains a complete copy of the parent cell's genetic material.
This type of reproduction, where a single parent produces offspring that are genetically identical to itself, is called asexual reproduction. It is the process by which many unicellular organisms, such as bacteria and some protists, reproduce.
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4. When the mole fraction of solute is 1, there is
(a) a 1:1 ratio of solute to solvent.
(b) no solute present.
(c) only solute present.
(d) only solvent present.
(e) 1 mole of solute and 99 moles of solvent.
Answers
Answer:
(c) only solute present
Explanation:
In chemistry, the mole fraction, denoted by X, refers to the number of moles of a substance in a compound/mixture divided by the total number of substances in the same compound or mixture.
In this case, we can say that mole fraction represents the number of solutes to the number of solutes and solvent in the solution i.e. X = nA/nA + nB
Where; nA = number of solutes
nB = number of solvent
X = mole fraction.
Based on this analogy, When the mole fraction of solute is 1, there is only solute present. That is; X = 1 / 1 + 0
X = 1/1 = 1.
Is the following nuclear equation balanced?
No
Yes
Answers
Answer:
Yes.
The nuclear equation {226/88 Ra → 222/26 Rn + 4/2 He} is balanced. As we know that an alpha particle is identical to a helium atom. This implies that if an alpha particle is eliminated from an atom's nucleus, an atomic number of 2 and a mass number of 4 is lost.
Therefore, the equation will be reduced to:
226 - 4 = 222
88 - 2 = 86
Hence, the equation is balanced.
Explanation:
Answer:
yes
Explanation:
s]imple yes