Question

**Please show work and give detailed
explanation**

Part 1: Determine the molar mass of Freon-11 gas if a sample weighing 0.597 g occupies 100.0 cm3 at 95°C and 1000.0 mm Hg

A. 0.19 g/mol B. 35.3 g/mol C. 70.9 g/mol D. 137 g/mol E. 384 g/mol

Part2: A sample of N2 gas at 10.0 °C has a pressure of 543 torr. At what temperature will it have a pressure of 450 torr if the volume remains constant?

A. 8.33 °C B. 12.0 °C C. 66.4 °C D. -38.5 °C E. -77.0 °C

Part 3: At what temperature would a molecule of 4He have a root mean square speed equal to the speed of sound, 331.3 m/s, at 1 atm?

A. 17.6 K B. 253 K C. 273 K D. 293 K E. 17600 K

Part 4: If equal masses of O2(g) and HBr(g) are in separate containers of equal volume and temperature, which one of the following statements is true?

A. The pressure in the O2 container is greater than that in the HBr container.

B. There are more HBr molecules than O2 molecules.

C. The average velocity of the O2 molecules is less than that of the HBr molecules.

D. The average kinetic energy of HBr molecules is greater than that of O2 molecules.

E. The pressures of both gases are the same.

Answer #1

"

1. What is the molar mass of a gas if 0.252 g of the gas
occupies a volume of 125 mL at a temperature of 123°C and a
pressure of 778 torr?
2. A mixture of 0.229 g of H2, 1.08 g of
N2, and 0.836 g of Ar is stored in a closed container at
STP. Find the volume (in L) of the container, assuming that the
gases exhibit ideal behavior.

part a
what is the molality of 3.00 g H2O2 in 97.00g of water?
part b
for the following reaction:
2NO(g)+2H2(g)-->N2 (g)+ 2H2O(g)
if N2 is being produced at rate of 0.25 atm/min, at which rate
is NO being used up?
part c
what will be the total pressure in a 3.00 L vessel containing
7.80 mol N2, 2.10 mol O2, and 0.10 Ar at 0.00 degree celsius?
part d
at standard temperature, a closed container of dry air contains...

1. A sample of gas occupies 5.27 L at a pressure of 2.63 atm.
Determine the new pressure (in atm) of the sample when the volume
changes to 4.56 L at constant temperature.
2. Determine the temperature (in °C) of a 4.77-mol sample of
CO2 gas at 6.11 atm in a container with a volume of 47.2
L.
3. Convert the pressure measurement of 2395 mmHg into units of
atmospheres.
4. A latex balloon has a volume of 87.0 L...

1. Circlethecorrect(mostappropriate)statement:
a) A well-insulated house stores a lot of heat
b) The walls of a well-insulated house approximate adiabatic
boundary
c) The walls of a well-insulated house approximate diathermal
boundary
d) All of these sentences are correct
e) None of these sentences is correct
2. Consider three systems at 37oC: a 1.0L sample of H2O, 100 L
of Ne gas at 1.00bar pressure, and a small crystal of NaCl.
a) What is the thermal equilibrium status in terms of...

Which of the following statements are true? A.The number of
moles in 1.00 atm of gas was the same, despite the fact that the
gases themselves had different identities. B.The number of moles in
1.00 atm of gas varied linearly with increasing molar mass. C.The
volume of the gas varied depending on the identity of the gas.
D.The number of moles in 1.00 atm of gas varied hyperbolically with
increasing molar mass.
Given Avogadro's Law, which of the following statements...

Question 11 pts
Which general statement about gases is NOT
correct?
The molecules of a pure gas are distributed evenly throughout
the container.
Gases are much less dense than liquids or solids
Molecules in a gas mixture can form layers according to their
densities
Gases can be compressed, even to the point of liquefaction
Flag this Question
Question 21 pts
Which example is the greatest pressure?
1.00 atm
101 kPa
760 mm Hg (= 760 torr)
All of the above...

If the number of moles of an ideal gas in a firm container
doubles while volume and temperature remain constant …
a. pressure doubles
b. pressure quadruple
c. pressure remains constant
d. pressure is reduced to half
e. pressure is reduced to a quarter
a
b
c
d
e
incorrect
IncorrectQuestion 2
0 / 1 pts
There are 3 balloons sitting next to each other, each of a
different size. What is in the biggest...

A student performed the experiment described in this module. The
5.00-mL mass of the 2.15% percent by mass H2O2 solution used was
5.03 g. The water temperature was 23 C, and the barometric pressure
was 31.2 in. Hg. After the student immersed the yeast in the
peroxide solution, she observed a 38.60-mL volume change in system
volume.
(c) Calculate the pressure, in torr, exerted by the collected O2
at the water temperature.
(d) Covert this pressue, in torr, to atmospheres....

A) A syringe containing 1.25 mL of oxygen gas is cooled from
90.3 ∘C to 0.9 ∘C. What is the final volume Vf of oxygen
gas?
B) What is its volume after an
additional 0.30 mol of gas is added to the cylinder? (Assume
constant temperature and pressure.) Express your answer to three significant
figures.
C) What is the pressure in a 12.9
L cylinder filled with 0.425 mol of nitrogen gas at a temperature
of 300 K ?
D)...

An ideal monatomic gas is contained in a vessel of constant
volume 0.330 m3. The initial temperature and pressure of the gas
are 300 K and 5.00 atm, respectively. The goal of this problem is
to find the temperature and pressure of the gas after 24.0 kJ of
thermal energy is supplied to the gas.
(a) Use the ideal gas law and initial conditions to calculate
the number of moles of gas in the vessel. Your response differs
from the...

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