1)
1)
Lets derive the equation to be used
use:
p*V=n*R*T
p*V=(mass/molar mass)*R*T
p*molar mass=(mass/V)*R*T
p*molar mass=density*R*T
So, the one with greater molar mass will be most dense
Molar mass of CO2,
MM = 1*MM(C) + 2*MM(O)
= 1*12.01 + 2*16.0
= 44.01 g/mol
Molar mass of N2O,
MM = 2*MM(N) + 1*MM(O)
= 2*14.01 + 1*16.0
= 44.02 g/mol
Molar mass of Cl2 = 70.9 g/mol
Clearly, molar mass is highest for Cl2
So, Cl2 is most dense
Only 1 question at a time please
1. Which gas is most dense at 1.00 atm and 23·C? CO, (2 points) .N20, or...
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Calcium hydride, CaH2, reacts with water to form hydrogen gas. CaH2(s) + 2 H2O(l) Ca(OH)2(aq) + 2 H2(g) This reaction is sometimes used to inflate life rafts, weatherballoons, and the like, where a simple, compact means of generating H2 is desired. How many grams of CaH2 are needed to generate 16.0 L of H2 gas if the pressure of H2is 750. torr at 25°C? ___ g
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