Question

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 cylinder is filled with 5.80 moles of gas. The tank is stored at 23 ∘C . What is the pressure in the tank? Express the pressure numerically in atmospheres. View Available Hint(s) Ptank = atm Submit Part C A 300 L kiln is used for vitrifying ceramics. It is currently operating at 1295 ∘C , and the pressure is 1.100 atm . How many moles of air molecules are within the confines of the kiln? Express your answer numerically in moles. View Available Hint(s) nair = moles Submit Part D A 12.0 L gas cylinder has been filled with 6.20 moles of gas. You measure the pressure to be 3.40 atm . What is the temperature inside the tank? Express your answer numerically in degrees Celsius. View Available Hint(s) Ttank = ∘C Submit

Answer 1

Part A-

PV = nRT

n = 3.10 moles

R = 0.0821

T = -9+ 273 = 264 K

P = 0.7 atm.

V = (3.10)*0.0821*264/0.7

V = 95.98 L

   or

V = 96 L

Part-B

PV = nRT

n = 5.8 moles

R = 0.0821

T = 23+ 273 = 296 K

V = 20 L

P = (5.8)*0.0821*296/20

P = 7 atm

Part-C

PV = nRT

P = 1.1 atm

R = 0.0821

T = 1295 + 273 = 1568 K

V = 300 L

n = 300*1.1/(0.0821*1568)

n = 2.56 moles

Part-D

PV = nRT

P = 3.4 atm

R = 0.0821

n = 6.20 moles

V = 12 L

T = 12*3.4/(0.0821*6.2)

T = 80.15 K

= 193 Degree C