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(C) Given:Volume $V = 4.00 	imes 10^{3} \ m^{3} = 4.00 	imes 10^{3} 	imes 10^{3} \ L = 4.00 	imes 10^{6} \ L$Pressure $P = 1.0 \ atm$Temperature $

Vedclass · Accepted Answer

$26$

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(C) Given:Volume $V = 4.00 	imes 10^{3} \ m^{3} = 4.00 	imes 10^{3} 	imes 10^{3} \ L = 4.00 	imes 10^{6} \ L$Pressure $P = 1.0 \ atm$Temperature $T = 300 \ K$Gas constant $R = 0.083 \ L \ atm \ K^{-1} \ mol^{-1}$Using the ideal gas equation $PV = nRT$,where $n = \frac{mass (m)}{Molar \ mass (M)}$:$n = \frac{PV}{RT} = \frac{1.0 	imes 4.00 	imes 10^{6}}{0.083 	imes 300} \ mol$$n = \frac{4.00 	imes 10^{6}}{24.9} \ mol \approx 1.6064 	imes 10^{5} \ mol$Molar mass of $CH_{4} = 12 + 4 	imes 1 = 16 \ g \ mol^{-1}$Mass $m = n 	imes M = 1.6064 	imes 10^{5} 	imes 16 \ g$$m = 25.7024 	imes 10^{5} \ g$Comparing with $X 	imes 10^{5} \ g$,we get $X = 25.7024$.Rounding to the nearest integer,$X = 26$.

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