Question

**Part A**

A balloon is floating around outside your window. The temperature outside is -11 ∘C , and the air pressure is 0.700 atm . Your neighbor, who released the balloon, tells you that he filled it with 4.90 moles of gas. What is the volume of gas inside this balloon?

**Part B**

A 10.0 L gas cylinder is filled with 5.60 moles of gas. The tank is stored at 25 ∘C . What is the pressure in the tank?

Express your answer to three significant figures and include the appropriate units.

**Part C**

A 180. L kiln is used for vitrifying ceramics. It is currently operating at 865 ∘C , and the pressure is 0.9750 atm . How many moles of air molecules are within the confines of the kiln?

**Part D**

A 10.0 L gas cylinder has been filled with 5.80 moles of gas. You measure the pressure to be 4.40 atm . What is the temperature inside the tank?

Answer #1

A)

we have:

P = 0.7 atm

n = 4.90 mol

T = -11.0 oC

= (-11.0+273) K

= 262 K

we have below equation to be used:

P * V = n*R*T

0.7 atm * V = 4.9 mol* 0.08206 atm.L/mol.K * 262 K

V = 150. L

Answer: 150. L

B)

we have:

V = 10.0 L

n = 5.60 mol

T = 25.0 oC

= (25.0+273) K

= 298 K

we have below equation to be used:

P * V = n*R*T

P * 10 L = 5.6 mol* 0.08206 atm.L/mol.K * 298 K

P = 13.7 atm

Answer: 13.7 atm

C)

we have:

P = 0.975 atm

V = 180.0 L

T = 865.0 oC

= (865.0+273) K

= 1138 K

find number of moles using:

P * V = n*R*T

0.975 atm * 180 L = n * 0.08206 atm.L/mol.K * 1138 K

n = 1.88 mol

Answer: 1.88 mol

D)

we have:

P = 4.4 atm

V = 10.0 L

n = 5.80 mol

we have below equation to be used:

P * V = n*R*T

4.4 atm * 10 L = 5.8 mol* 0.08206 atm.L/mol.K * T

T = 92.4 K

Answer: 92.4 K

Part A A balloon is floating around outside your window. The
temperature outside is -9 ∘C , and the air pressure is 0.700 atm .
Your neighbor, who released the balloon, tells you that he filled
it with 3.10 moles of gas. What is the volume of gas inside this
balloon? Express your answer numerically in liters. View Available
Hint(s) Vballoon = 112.0787.82 87.82 L SubmitPrevious Answers
Incorrect; Try Again; 3 attempts remaining Part B A 20.0 L gas
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Consider 4.30 L of a gas at 365 mmHg and 20. ∘C . If the
container is compressed to 2.70 L and the temperature is increased
to 30. ∘C, what is the new pressure, P2, inside the
container? Assume no change in the amount of gas inside the
cylinder.
Express your answer with the appropriate units.
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All pressure–volume–temperature relationships for gases can be
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