Question #ee169

1 Answer
A08
Oct 30, 2016

You have done well except molar mass of hydrogen gas #"H"_2#, should be doubled as it has two atoms. The answer goes as below

Explanation:

Use the formula
Density #d = "Molar mass"xx P / (RT)#

#"Molar mass" = 2xx1.00794= 2.01588g#
#P = 1645 xx 0.068046 = 111.93567 atm#
#R = 0.08206#
#T = 273.15 + 24.0 = 297.15 K#

Inserting the values in the formula:

#d = 2.01588xx 111.93567 / (0.08206xx297.15)#

#d = 9.2 g//L#, rounded to one decimal place.

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