If 20.0 g of nitrogen gas has a volume of 4.00 Land a pressure of 6.00 atm, what

Question

If 20.0 g of nitrogen gas has a volume of 4.00 Land a pressure of 6.00 atm, what is its temperature in degrees Celsius? Patients suffering from respiratory disorders are often treated in oxygen tents in which the atmosphere is enriched in oxygen. What is the partial pressure of O_2 in an oxygen tent consisting of 45.0% O_2 for an atmospheric pressure of 753 mmHg? Approximately 240 mL/min of CO_2 is exhaled by an average adult at rest. Assuming a temperature of 37.0 degree C and 1.00 atm pressure, how many moles of CO_2 is this? How many grams of CO_2 is this? Isooctane, C_8H_18, is the component of gasoline from which the term octane rating derives. a) Write a balanced equation for the combustion of isooctane to yield carbon dioxide and water. b) Assuming that gasoline is 100% isooctane and that the density of isooctane is 0.792 g/mL, what mass of CO_2 in kilograms is produced each year by the annual U.S. gasoline consumption of 4.6 times 10^10 L? c) What is the volume in liters of this CO_2 at STP?

Explanation / Answer

7. Ideal gas equation is:-

PV=nRT

T=temperature=PV/nR

Where P=pressure=6 atm

V=4 L

R=0.082Latm/mol-k

n=20/28

T=PV/nR=409.7K

T=126.7°C

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