A beaker is filled with 5.7 grams of nitrogen gas in a fixed volume of 4.0 Liters. One of the valves opened ad
there remains only 3.8 grams of nitrogen gas, calculate the new volume of gas
2.67 L
Answers
Answer:
New volume of gas is still 4.0 litres
Explanation:
Gases have no definite shape or volume. They therefore take the shape of their containers. Hence, volume of gas in a container is determined by the volume of the container. Though some gas was lost after the opening of one of the valves, volume of gas still remains the same.
Related Questions
What mass of K2SO4 must be added to 1.20 liters of water to produce a 1.50 M solution?
Answers
Answer:
313.2 g of \({K_{2} }S O_{4}\) must be added to 1.20 liters of water to produce a 1.50 molar solution.
Explanation:
What is molarity?
Molarity is a unit of concentration of a solution. It is defined by the number of moles of the solute that is present in one liter (1L) of the solution. It is denoted by M. Thus, molarity = \(\frac{Number of moles of the solute (n) }{Volume of the solution (V) (in L)}\)∴ The number of moles of solute = molarity x volume of the solution.According to the given question,
Molarity of the solution = 1.50 MThe volume of the solution = 1.20 LUnknown = Mass of \({K_{2} }S O_{4}\) required.Solution :
∴ Number of moles of solute, here, \({K_{2} }S O_{4}\)
= molarity x volume of the solution
= 1.20 x 1.50 = 1.8
∴ Mass of 1.8 moles of \({K_{2} }S O_{4}\) = 1.8 x molar mass of \({K_{2} }S O_{4}\)
Now the molar mass of \(K_{2} SO_{4}\)
= (Gram atomic mass of K x 2) + (Gram atomic mass of S) + (Gram atomic mass of O x 4)
= (39x2) + 32 + (16 x 4) g
= 174 g.
∴ Mass of 1.5 moles of \({K_{2} }S O_{4}\)
= 1.8 x molar mass of \({K_{2} }S O_{4}\)
= 1.8 x 174 g
= 313.2 g.
Thus, 313.2 g of \({K_{2} }S O_{4}\) must be added to 1.20 liters of water to produce a 1.50 M solution.
To know more about molarity, visit :
https://brainly.com/question/15406534
a substance occupies one half of an open container. the atoms of the substance are closely packed but are still able to slide past each other.what is most likely the phase of the substance?gasliquidsolid and gasliquid and solid
Answers
The phase of a substance that occupies one-half of an open container and the atoms of the substance are closely packed but are still able to slide past each other is a liquid.
In the field of science, such a state in which the substance takes the shape of a container and the molecules can slide past each other is referred to as the liquid state.
The liquid state is the state that comes in between the solid phase and the gaseous phase. In the solid state, the molecules are packed too tightly and in the gaseous state, the molecules can move freely.
Hence, such a substance that has molecules closely packed but still sliding past each other would be a liquid phase.
To learn more about liquid, click here:
https://brainly.com/question/1268050
#SPJ4
Based on Rf values of sample A and B, what can you conclude about the IMFs both samples have for the eluent and paper?
Answers
Without knowing the specific values of the Rf values for sample A and B, it is difficult to draw a definitive conclusion about the intermolecular forces (IMFs) both samples have for the eluent and paper.
However, in general, the Rf value is influenced by the intermolecular forces between the compound being separated and the stationary phase (in this case, the paper) as well as the intermolecular forces between the compound being separated and the mobile phase (in this case, the eluent). A higher Rf value indicates that the compound is more soluble in the mobile phase and has weaker interactions with the stationary phase.
Therefore, if sample A has a higher Rf value than sample B, it suggests that sample A has weaker intermolecular forces with the stationary phase and stronger intermolecular forces with the mobile phase than sample B. Conversely, if sample B has a higher Rf value than sample A, it suggests that sample B has weaker intermolecular forces with the mobile phase and stronger intermolecular forces with the stationary phase than sample A.
To know more about Rf values click here:
https://brainly.com/question/31117352
#SPJ11
What is the main function of this organ system It protects vital organs from injury. It is the first line of defense and keeps the body warm. It transports nutrients and oxygen to body cells. It produces hormones that regulates growth and metabolism.
Answers
Answer:
Organ systems & their main functions
Explanation:
The chest bones Rib Cage & spine - protects the vital organs (heart, lung,liver) from injury & provides structural support for body.
Skin is the body's first line of defense & keeps the body warm. In case of any invading infection, fever - body temperature rise fights it.
Circulatory system (containing heart) & its body fluid blood - transports nutrients and oxygen to body cells
Endocrine system regulates growth, produces hormones - that target organs via bloodstream.
Label the diagram of the ionic bond with the names of the 2 elements involved.
Sodium
Lithium
Chlorine
Fluorine
Answers
In the image shown, lithium combines with fluorine to give lithium fluoride.
What is the compound formed?We know that a compound is formed when there is a combination of atoms to form a compound. There are several kinds of bonds that could be formed between the atoms in a compound. In this case, we have the ionic bond. The ionic bond is formed by the complete transfer of valence electrons from a metallic element to a nonmetallic element.
Now, we have two elements that are combining, the element by the left hand side is the metal and this metal is lithium. It combines with the non metal fluorine on the right hand side to yield Lithium fluoride.
Learn more about ionic bond:https://brainly.com/question/11527546
#SPJ1
Which pair of elements has chemical properties which are most similar A) Li and Be B) Li and Mg C) Be and Na D) Be and Mg
Answers
Answer:
D) Beryllium and Magnesium
Explanation:
All elements in the periodic table that are "grouped" into vertical columns have similar properties, and are called a "family"
Lithium and Beryllium are both metals but one is alkaline earth metal and the other is just an alkali metal, and they're not in the same group
Lithium and Magnesium are the same thing as said above, they're not in the same group
Same with Beryllium and Sodium
Beryllium and Magnesium are both in the same group so they would have the properties most similar to each other
En un recipiente se colocan 250 ml de agua, clavos de hierro, aceite y una pequeña cantidad de sal común. Indique:tipo de sistema
b. cantidad de fases
c. cantidad de componentes
Answers
Answer:
Los sólidos tienen una forma y un volumen definidos. Los líquidos tienen ... Para describir las fases sólida, líquida y gaseosa. El agua puede tomar muchas formas. ... Un líquido familiar es el mercurio metálico.
Calculate the ph of this solution. round to the nearest hundredth. poh = 3.45 ph =
Answers
The potential of hydrogen pH of the solution with the given value of pOH to the nearest hundredth is 10.55.
What is pH of solution?
The pH of a solution is defined as the logarithm of the reciprocal of the hydrogen ion concentration [H+] of the given solution.
It is expressed as;
pH = -log[ H⁺ ]
Also,
pH + pOH = 14
Given that;
pOH = 3.45pH = ?We simply substitute our values into the expression above.
pH + pOH = 14
pH + 3.45 = 14
pH = 14 - 3.45
pH = 10.55
Therefore, the potential of hydrogen pH of the solution with the given value of pOH to the nearest hundredth is 10.55.
Learn more about pH & pOH here: brainly.com/question/17144456
#SPJ4
Answer:
10.55
Explanation:
pH = 10.55
what would happen if a roof was made from wool?
A. it would not be transparent anymore.
B. it would not be waterproof anymore.
C. it would be soft and transparent.
D. it would be hard and water resistant .
Answers
Answer:
B
Explanation:
it will not be waterproof anymore
Ocean and wind currents are both caused by
A. uneven specific heat
B. the jet stream
C. the gulf stream
D. uneven insolation
Answers
Ocean and wind currents are both caused by
uneven specific heatSo,option A is correct one.
How Ocean and wind currents are both caused?The solar radiation received by the earth more at equator as compare to poles.The uneven distribution of heat creates pressure difference,which leads to cause the movement of air or wind on the surface of ocean.What is wind current?The air that moves in a river like a flow in a particular direction is called wind current.
To learn more about heat here,
https://brainly.com/question/21041726
#SPJ2
Consider the equations below.
4 equations. 1, Upper C Upper H Subscript 4 Baseline (g) right arrow Upper C (s) + 2 Upper H Subscript 2 Baseline (g) Delta H Subscript 1 Baseline = 74.6 kilojoules. 2, Upper C (s) + 2 Upper C l Subscript 2 Baseline (g) right arrow Upper C Upper Cl Subscript 4 Baseline (g) Delta H Subscript 2 Baseline = negative 95.7 kilojoules. 3, 2 Upper H Subscript 2 Baseline (g) + 2 Upper C l Subscript 2 Baseline (g) right arrow 4 Upper H Upper Cl (g) delta H Subscript 3 Baseline = negative 284.6 kilojoules. 4, Upper C Upper H Subscript 4 Baseline (g) + 4 Upper C l Subscript 2 Baselines (g) right arrow Upper C Upper C l Subscript 4 Baseline (g) + 4 Upper H Upper C L (g) Delta H 4 = negative 205.7 kilojoules.
Complete the following based on the diagram.
Arrow A:
Arrow B:
Arrow C:
Arrow D:
Answers
The Correct representation of arrows are Arrow A : 74.6 kJ, Arrow B : Exothermic, Arrow C : has a magnitude that is less than that of B, Arrow D : represents the overall enthalpy of reaction
What are Exothermic reaction ?Those reactions which releases energy are called as exothermic reactions.
Correct representations of arrows based on the diagram ;
Arrow A : 74.6 kJArrow B : exothermicArrow C : has a magnitude that is less than that of BArrow D : represents the overall enthalpy of reactionLearn more about exothermic reaction here ;
https://brainly.com/question/22941169
#SPJ1
Answer:
The above answers are correct! If you want it a little more simply tho:
Arrow A: Option A
Arrow B: Option B
Arrow C: Option B
Arrow D: Option C
Explanation:
Hope this gave a little more clarification!
Have a great day :)
Brainliest would be great :D
You are the IT consultant to a petro-chemical company. The company has ten servers and 250 workstations located in San Francisco and New Orleans. They are currently using tape cartridge backup on a nightly basis. What is the obvious flaw in this solution
Answers
One of the flaws of this solution is that because it is programmed at night data loss is possible if a failure occurs at this time.
Why is tape cardrigde backup used?This is used to save important information or date from a device such as a computer periodically.
What are the advantages of this solution?Tape cardridge backup is the best option if a lot of data has to be saved because they are efficient and low cost.
What is one possible flaw?The only problem is that because the back up is automatically programmed at night, a failure such as a problem in electricity implies valuable data might be lost.
Learn more about a backup in: https://brainly.com/question/20566610
#SPJ1
Three safety-related rules concerning the location of machine controls on equipment involving fluid power components.
Answers
1. Ensure Clear and Visible Placement: Machine controls should be located in a position that is easily accessible, visible, and within reach of the equipment operator. Clear and intuitive labeling or color-coding can also be used to enhance visibility and assist in identifying the controls quickly.
2. Provide Adequate Guarding: The machine controls should be positioned in a manner that minimizes the risk of accidental activation or unintended operation. This can be achieved by incorporating appropriate guarding or barriers around the controls to prevent inadvertent contact or interference.
3. Consider Ergonomics and Operator Comfort: When determining the location of machine controls, it is essential to consider ergonomic principles and operator comfort. Controls should be positioned in a way that allows operators to maintain a comfortable and natural posture while operating the equipment. This can help reduce the risk of operator fatigue, musculoskeletal disorders, and errors due to discomfort or awkward reach.
These rules aim to promote operator safety, minimize the potential for accidents, and ensure efficient and effective control of equipment involving fluid power components.
To know more about musculoskeletal disorders.
https://brainly.com/question/30279097
#SPJ11
SEP Use a Model Write the balanced chemical equation for the
reaction of glucose (C6H₁2O6) with oxygen gas to produce carbon
dioxide gas and water vapor.
Answers
Answer:
The balanced chemical equation for the reaction of glucose with oxygen gas to produce carbon dioxide gas and water vapor is:
C6H12O6 + 6O2 -> 6CO2 + 6H2O
This equation represents the combustion of glucose in the presence of oxygen, which is a common process used by living organisms to generate energy. In this reaction, glucose and oxygen react to form carbon dioxide and water, with the release of energy in the form of heat and light. The balanced equation shows that for every molecule of glucose and six molecules of oxygen, six molecules of carbon dioxide and six molecules of water are produced
How many milliliters of water are needed to prepare 2. 50 M of calcium nitrate solution if 3. 66g are used?
Answers
There would be 8.9 mL of water are needed to prepare 2. 50 M of calcium nitrate solution if 3. 66g are used
To find the volume, first we should calculate the moles of calcium nitrate (Ca(NO₃)₂)
Moles Ca(NO₃)₂ = mass / mass molar
Moles Ca(NO₃)₂ = 3. 66 g / 164.088 g/mol
Moles Ca(NO₃)₂ = 0.0223 moles
we already know that
moles = concentration x volume
volume = moles / concentration
volume = 0.0223 moles / 2. 50 M
volume = 0.0089 L = 8.9 mL
Therefore, if 3. 66g calcium nitrate are used, 8.9 mL of water would be required to prepare exactly 2. 50 M of calcium nitrate solution.
Learn more about solution at https://brainly.com/question/21477404
#SPJ4
If a nitrogen atom has 7 protons and 7 neutrons, what is its mass?
Answers
so that’s simple
7 + 7=14!
What are several general uses of the alkali metals?
Answers
hope this helps!!:)
14. Energy (heat) is always transferred from ___ energy to ___ energy
A. low kinetic; high kinetic
B. high kinetic; high kinetic
C. high kinetic; low kinetic
D. low kinetic; low kinetic
Answers
Answer:i pretty sure it is high to low kinetic
Explanation: because heat or energy travels from hot heat to low heat which heat is the same as kinetic
Fe + CuSO4 → FeSO4 + Cu
What type of reaction is shown above?
Answers
A single replacement reaction
Further explanationThere are two types of chemical reactions that may occur.
namely single-replacement reactions and double-replacement reactions.
A single replacement reaction is a chemical reaction in which one element replaces the other elements of a compound to produce new elements and compounds
Not all of these reactions can occur. We can use the activity series, which is a list of elements that can replace other elements below / to the right of them in a single replacement reaction.
This series is better known as the Volta series, where the metal element with a more negative electrode potential is on the left, while the element with a more positive electrode potential on the right.
The more left the position of a metal in the series, the more reactive metal (easy to release electrons, the stronger as the reduction agent)
The metal activity series is expressed in voltaic series
Li-K-Ba-Ca-Na-Mg-Al-Mn- (H2O) -Zn-Cr-Fe-Cd-Co-Ni-Sn-Pb- (H) -Cu-Hg-Ag-Pt-Au
Fe(more active element) takes the place of Cu(less reactive element) in the CuSO4 compound
Answer:single replacement
Explanation:
How are stalactites formed?
Answers
Answer:
Explanation:
As the redeposited minerals build up after countless water drops, a stalactite is formed. If the water that drops to the floor of the cave still has some dissolved calcite in it, it can deposit more dissolved calcite there, forming a stalagmite.
select the correct options please
Which of the following compounds are not true organometallic compounds in the eyes of purists? Select one: A. Compounds 2 and 4 B. Compounds 1 and 5 C. Compound 5 only D. Compound 3 only E. Compound 2
Answers
To determine which compounds are not true organometallic compounds in the eyes of purists, we need to consider the definition of organometallic compounds.
Organometallic compounds are compounds that contain a direct bond between a carbon atom and a metal atom. Based on this definition, we can evaluate each compound provided:
Compound 1: This compound contains a direct bond between a carbon atom and a metal atom (M), so it is a true organometallic compound.
Compound 2: This compound contains a direct bond between a carbon atom and a metal atom (M), so it is a true organometallic compound.
Compound 3: This compound does not contain a direct bond between a carbon atom and a metal atom. Instead, it has a metal atom (M) coordinated to a ligand (L) without a direct carbon-metal bond. Therefore, it is not considered a true organometallic compound in the eyes of purists.
Compound 4: This compound contains a direct bond between a carbon atom and a metal atom (M), so it is a true organometallic compound.
Compound 5: This compound does not contain a direct bond between a carbon atom and a metal atom. It has a metal atom (M) coordinated to a ligand (L) without a direct carbon-metal bond. Therefore, it is not considered a true organometallic compound in the eyes of purists.
Based on the above analysis, the correct answer is:
D. Compound 3 only
Compound 3 is not considered a true organometallic compound since it lacks a direct carbon-metal bond.
To know more about bonds , visit;
https://brainly.com/question/25965295
#SPJ11
A gas with a volume of 2.1 L at an initial pressure of 81.3 kPa expands until the pressure drops to 16.4 kPa. What is the new volume?
Answers
The new volume will be 10.41 L.
P₁V₁ = P₂V₂ , where
P₁V₁ = Volume and the pressure of the gas at initial stage
P₂V₂ = Volume and the pressure of the gas at final stage
To get V₂, rearrange the equation,
V₂ = P₁/P₂ * V₁
= 81.3 kPa / 16.4 kPa * 2.1 L
= 10.41 L
The frequency and force of the collisions between the gas molecules and the container walls determine the gas pressure. Because the molecules are travelling with the same average kinetic energy, they must collide with the container walls less frequently.
The only way to do this is to increase the volume. Boyle's Law states that pressure and volume have an inverse relationship when temperature and the number of moles are held constant. This results from the requirement that the volume-pressure product remain constant during this process.
To learn more about pressure , click here.
https://brainly.com/question/12971272
#SPJ1
Which of the following plants and animals do not need to survive?
Shade
Oxygen
Water
Energy
Answers
The two 10-cm-long parallel wires in the figure are separated by 5.0 mm. For what value of the resistor R will the force between the two wires be 9.00×10−5 N?
Answers
The value of the resistor R that will produce a force of 9.00×10⁻⁵ N between the two parallel wires separated by 5.0 mm and each having a length of 10 cm is approximately 1.8 Ω.
How can we calculate the value of the resistor R?To calculate the value of the resistor R, we can use the formula for the magnetic force between two parallel wires:
\[ F = \frac{{\mu_0 \cdot I_1 \cdot I_2 \cdot \ell}}{{2 \pi \cdot d}} \]
where F is the force, μ₀ is the permeability of free space, I₁ and I₂ are the currents in the wires, ℓ is the length of the wires, and d is the separation between the wires.
In this case, the force F is given as 9.00×10⁻⁵ N, the length of each wire ℓ is 10 cm (or 0.10 m), and the separation between the wires d is 5.0 mm (or 0.005 m).
By rearranging the formula, we can solve for R:
\[ R = \frac{{2 \pi \cdot d \cdot F}}{{\mu_0 \cdot \ell}} \]
Substituting the given values into the equation, we get:
\[ R = \frac{{2 \cdot 3.1416 \cdot 0.005 \cdot 9.00×10⁻⁵}}{{4\pi × 10^{-7} \cdot 0.10}} \approx 1.8 \, \Omega \]
Learn more about value
brainly.com/question/30145972
#SPJ11
Calculate the specific heat of glass from the following data. The temperature of a piece of glass with a mass of 65 g increases by 26°C when it absorbs 840 J of heat energy.
Answers
Answer:497J/kg/K
Explanation:
Use the equation: Q=mS◇T
According to specific heat capacity, the specific heat of glass is 0.4970 J/gK.
What is specific heat capacity?Specific heat capacity is defined as the amount of energy required to raise the temperature of one gram of substance by one degree Celsius. It has units of calories or joules per gram per degree Celsius.
It varies with temperature and is different for each state of matter. Water in the liquid form has the highest specific heat capacity among all common substances .Specific heat capacity of a substance is infinite as it undergoes phase transition ,it is highest for gases and can rise if the gas is allowed to expand.
It is given by the formula ,
Q=mcΔT
Substituting values in above equation, c=Q/mΔT, C=840/65×26=0.4970 J/gK.
Thus, the specific heat of glass is 0.4970 J/gK.
Learn more about specific heat capacity,here:
https://brainly.com/question/28941910
#SPJ2
What is the name of the ionic compound made of beryllium and chlorine?
A) Monoberyllium dichloride
B) Beryllium (II) chloride
C) Sodium chloride
D) Beryllium chloride
E) None of the above
Answers
The name of the ionic compound made of beryllium and chlorine is Beryllium chloride (option D).
Ionic compounds are compounds that are made up of oppositely charged ions. These ions are formed by transferring electrons from one atom to another. They are made up of cations and anions. Cations are positively charged ions, whereas anions are negatively charged ions.
The formation of ionic compounds involves the transfer of electrons from the metal to the non-metal. This creates oppositely charged ions that are attracted to each other, forming the ionic bond between them.
The formula for an ionic compound represents the ratio of cations to anions in the compound.
Examples of ionic compounds are sodium chloride (NaCl), magnesium oxide (MgO), and calcium chloride (CaCl2).
Thus, the correct answer is option D, beryllium chloride.
To learn more about an ionic compound :
https://brainly.com/question/18246121
#SPJ11
(100 POINTS) Compare the forces between particles solids, liquids, gases
Answers
While solids have certain shape and volume, liquids only have definite volume but not shape, gases neither have shape nor volume. The level of energy is highest in gases, medium in liquid and lowest in solids. The compression of solids is difficult, liquids are nearly incompressible, but gases can be easily compressed.
#SPJ1
what is the function of the acid catalyst in promoting the dehydration of cyclohexanol?
Answers
The function of the acid catalyst in promoting the dehydration of cyclohexanol to form cyclohexene
The acid catalyst, such as concentrated sulfuric acid (H2SO4) or phosphoric acid (H3PO4), plays a crucial role in promoting the dehydration of cyclohexanol to form cyclohexene. The catalyst lowers the activation energy required for the reaction, making it proceed more efficiently and at a faster rate. The acid catalyst protonates the hydroxyl group (-OH) present in cyclohexanol, converting it into a better leaving group (water). This step forms a carbocation intermediate.
The adjacent carbon-hydrogen bond then breaks, and the electrons from the bond move to form a double bond between the carbons, releasing a water molecule in the process. Finally, the acid is regenerated, which makes it a true catalyst since it is not consumed in the overall reaction. In summary, the acid catalyst promotes the dehydration of cyclohexanol by protonating the hydroxyl group and facilitating the formation of cyclohexene, a more stable product.
To learn more about acid catalyst here:
https://brainly.com/question/14693649
#SPJ11
24.1% of all the isotopes of an element have a mass of 75.23 amu, 48.7% have a mass of 74.61 amu, and 27.2% have a mass of 75.20 amu. How many protons
does this element have? (hint: Find the average atomic mass)
3
34
33
no way to know
Answers
The number of protons in the element is 33.
From the information provided we can find the relative atomic mass of the element as follows;
RAM = (0.241 × 75.23) + (0.487 × 74.61) + (0.272 × 75.20)
RAM = 18.13 + 36.34 + 20.45
RAM = 74.92 amu
The element with relative atomic mass of 74.92 amu is Arsenic.
The atomic number of arsenic is 33. This is the number of protons in its nucleus. Therefore, the number of protons in the element is 33.
Learn more:https://brainly.com/question/1371394
Balancing Chemical Reactions Worksheet A glow stick is a popular toy and safety device. To use a glow stick, you bend a small flexible plastic tube to break a small glass capsule inside, at which point the stick begins to glow. How do you think this works
Answers
Answer:
Concept of chemi-fluorescence
Explanation:
A glow stick usually consists of two chemicals in a larger plastic tube: , a base catalyst (mostly sodium salicylate), and a suitable dye (sensitizer, or fluorophor). This creates an exergonic reaction when mixed together.
When a glow stick is bent, the flurophor which is a chemical that easily re-emits light upon excitation in smaller capsules is released into the other substance, there by causing it to emit radiation/light in the uv-visible region. The brightness and longevity of the glow stick is determined by varying the concentration of these chemicals.
I hope this explanation clarifies things.