Chemistry: Matter and Change

Section 3: Gas Stoichiometry

Self Check Quizzes

1
Calculate the number of moles of gas contained in a 16.0-L vessel at 373 K with a pressure of 2.50 atm.
A)2.8 x 10-3 mol
B)1.31 x 10-1 mol
C)0.766 mol
D)1.31 mol
2
A gaseous compound is 30.6% nitrogen and 69.4% oxygen by mass. A 5.25-g sample of the gas occupies a volume of 1.00 L and exerts a pressure of 1.26 atm at -4.0°C. What is the molecular formula for the gas?
A)NO
B)NO2
C)N3O6
D)N2O4
3
In the reaction shown, what mass of methane is required to produce 10.0 grams of water vapor?

<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/007874637x/514709/figure_13_10_page_460_2008_CMC.jpg','popWin', 'width=469,height=183,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (42.0K)</a>
A)22.5 grams
B)4.45 grams
C).0445 grams
D)6.23 grams
4
What volume of oxygen gas is needed for the complete combustion of 40.0 liters of hydrogen gas?

2H2(g) + O2(g) yields 2H2O(g)
A)40.0 l
B)80.0 l
C)20.0 l
D)2.00 l
5
Dry ice is solid carbon dioxide. What volume of dry ice is produced at STP if 0.50 kg of dry ice becomes carbon dioxide gas?

CO 2 (s) yields CO 2 (g)
A)250 l
B)2.0 l
C)0.25 l
D)0.51 l
Glencoe Online Learning CenterScience HomeProduct InfoSite MapContact Us

The McGraw-Hill CompaniesGlencoe