Question

1. A sample of gas with an initial volume of 28.2 L at a pressure of 728 mmHg and a temperature of 301 K is compressed to a volume of 14.9 L and warmed to a temperature of 375 K. What is the final pressure of the gas?

2. A gas sample with a volume of 5.3 L has a pressure of 725 mmHg at 24C. What is the pressure of the sample if the volume remains at 5.3 L but the temperature rises to 88 ∘C?

3. What is the volume occupied by 0.256 mol of helium gas at 1.20 atm and 303 K ?

4. A cylinder contains 28.5 L of oxygen gas at a pressure of 1.6 atm and a temperature of 300 K . How many moles of gas are in the cylinder?

Express your answer using two significant figures.

5. An experiment shows that a 266 mL gas sample has a mass of 0.428 g at a pressure of 765 mmHg and a temperature of 30 ∘C. What is the molar mass of the gas?

Answer #1

1. We know Ideal gas equation PV=nRT

Now for the two conditions let P1, V1, T1 be pressure, volume, temperature for initial condition and P2, V2, T2 be pressure, volume, temperature for final condition.

So, P1*V1/T1=P2*V2/T2 (equation 1)

Here, P1=728 mm Hg, V1= 28.2 L, T1= 301 K and P2= ?, V2= 14.9 L, T2= 375 K.

On putting value in equation 1

(728 mm Hg)*(28.2 L)/(301 K) = P2*(14.9 L)/(375 K).

P2 = 1716.56 mm Hg.

2. According to Gayy Lussac's Law, at constant Volume, Pressure is directly proportional to Temperature.

So, P1/T1=P2/T2

Here, P1= 725 mm Hg, T1=24 °C, P2= ?, T2= 88 °C

On putting values in above equation

(725 mm Hg)/(24 °C) = P2/(88 °C)

P2= 197.73 mm Hg

A sample of helium gas has a volume of 5.10 L at a pressure of
815 mmHg and a temperature of 26 ∘C.
A) What is the pressure of the gas in atm when the volume and
temperature of the gas sample are changed to 1610 mLand 338 K if
the amount of gas is constant?
B) What is the pressure of the gas in atm when the volume and
temperature of the gas sample are changed to 2.33 L...

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...

A sample of an ideal gas has a volume of 2.34 L at 278 K and
1.10 atm. Calculate the pressure when the volume is 1.12 L and the
temperature is 303 K.

1/ A sample of xenon gas that occupies a volume
of 42.7 L at a temperature of 0 °C and a pressure
of 1 atm contains (......) moles of gas.
2/ A sample of nitrogen gas collected at STP
occupies a volume of 13.4 L. How many moles of gas
does the sample contain? (.......) mol
3/ What volume is occupied by a 0.920 mol
sample of carbon dioxide gas at a temperature of 0
°C and a pressure of...

A sample of argon gas has a volume of 735 mL at a pressure of
1.20 atm and a temperature of 112 degrees Celsius. What is the
final volume of the gas, in milliliters when the pressure and
temperature of the gas sample are changed to the following, if the
amount of gas does not change?
A. 658 mmHg and 281 K
B. 0.55 atm and 75 degrees Celsius
C. 15.4 atm and -15 degrees Celsius

Helium gas with a volume of 2.60 L , under a pressure of 0.160
atm and at a temperature of 43.0 ∘C, is warmed until both pressure
and volume are doubled.
Part A
What is the final temperature?
Express your answer using three significant figures.
Part B
How many grams of helium are there? The molar mass of helium is
4.00 g/mol.

Consider 4.30 L of a gas at 365 mmHg and 20. ∘C . If the
container is compressed to 2.90 L and the temperature is increased
to 32 ∘C , what is the new pressure, P2, inside the container?
Assume no change in the amount of gas inside the cylinder.
What pressure would it take to compress 250. L of helium gas
initially at 1.00 atm into a 2.00 L tank at constant
temperature?
A balloon filled with 2.00 L...

A sample of nitrogen (N2) has a volume of 42.0 L at a pressure
of 752 mmHg. What is the final volume, in liters, of the gas at
each of the following pressures, if there is no change in
temperature and amount of gas?
723mmHg=
3.0 atm=
0.580aatm=
880 torr=

A sample of an ideal gas has a volume of 2.24 L at 287 K and
1.12 atm. Calculate the pressure when the volume is 1.76 L and the
temperature is 308 K.

Part A)
If the sample is compressed to a volume of 15.4 L , what is its
pressure?
Express the pressure in atmospheres to three significant
figures.
Part B) A syringe containing 1.30 mL of oxygen gas is cooled
from 97.1 ∘C to 0.4 ∘C. What is the final volume Vf of
oxygen gas?
Part C)
What is its volume after an additional 0.26 mol of gas is added
to the cylinder? (Assume constant temperature and pressure.)
Express your answer...

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 9 minutes ago

asked 34 minutes ago

asked 36 minutes ago

asked 38 minutes ago

asked 38 minutes ago

asked 46 minutes ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago