Ques 5.a: A gas mixture with a total pressure of 745mmHg containseach of the following gases at the indicated partial pressures:CO2, 265mmHg ;Ar , 117mmHg ; and O2 , 166mmHg . The mixture alsocontains helium gas.
What mass of helium gas is present in a 10.6- sample of thismixture at 275 ?
What is the partial pressure of the helium gas?
PHe=__mmHg
b. What mass of helium gas is present in a 10.6L- sample of thismixture at 275K ?
m=_g

Ques. 9
Oxygen gas reacts with powdered aluminum according to the followingreaction:
4Al(s)+3O2(g)=2Al2O3(s)
What volume of o2 gas (in L), measured at 770 mmHg and 23 degreesC, is required to completely react with 50.5 g ofAl ?
v=_______L

Question

Ques 5.a: A gas mixture with a total pressure of 745mmHg containseach of the following gases at the indicated partial pressures:CO2, 265mmHg ;Ar , 117mmHg ; and O2 , 166mmHg . The mixture alsocontains helium gas.
What mass of helium gas is present in a 10.6- sample of thismixture at 275 ?
What is the partial pressure of the helium gas?
PHe=______mmHg
b. What mass of helium gas is present in a 10.6L- sample of thismixture at 275K ?
m=_______g

Ques. 9
Oxygen gas reacts with powdered aluminum according to the followingreaction:
4Al(s)+3O2(g)=2Al2O3(s)
What volume of o2 gas (in L), measured at 770 mmHg and 23 degreesC, is required to completely react with 50.5 g ofAl ?
v=_________L

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