Calculate the volume of this gas at STP.
0.442 mol C2H6

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7.6 mol Ar

0.44 mol C2H6

STP = 1 atm and 273 K

Use PV = nRT and solve for V

V = nRT/P

Plug in the number of moles accordingly for each gas and plug in 273 K for the variable T

1 atm for the variable P and use 0.08206 L•atm/k•mol for the variable R (gas law constant)

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