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2 September, 18:54

A 20-liter cylinder contains 4 moles of natural gas. The temperature of the cylinder is 274 K. Assuming that the gas is ideal and using the universal gas constant of 0.08206 L-atm/mol-K, what is the approximate pressure in the cylinder?

A.

54.8 atm

B.

112.4 atm

C.

4.5 atm

D.

22.5 atm

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  1. 2 September, 19:22
    0
    4.5 atm

    Explanation:

    We are given;

    Volume of the cylinder as 20 L Moles of the gas as 4 moles Temperature of the gas as 274 K Universal gas constant as 0.08206 L-atm/mol-K

    We are required to determine the pressure in the cylinder.

    We are going to use the ideal gas equation; According to the ideal gas equation;

    PV = nRT

    Rearranging the formula;

    P = nRT : V

    Replacing the values of the known variables;

    P = (4 mol * 0.08206 L-atm/mol-K * 274 K) : 20 L

    = 4.497 atm

    = 4.50 atm

    Therefore, the pressure in the cylinder is 4.5 atm
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