At STP is is 32/22.4 = ?
At 1 atm and 20C use PMolar mass = density*RT
and solve for density. Remember T must be in kelvin.
Use P*molar mass = gRT/V
Solve for molar mass and since it is X2 divide by 2 to find atomic mass. Look it up on the periodic table.
1.Calculate the density of oxygen, O2, under each of the following conditions:
STP
1.00 atm and 20.0 ∘C
2.To identify a diatomic gas (X2), a researcher carried out the following experiment: She weighed an empty 4.3-L bulb, then filled it with the gas at 1.90atm and 20.0 ∘C and weighed it again. The difference in mass was 9.5g . Identify the gas.
3.If 2.9g of N2 gas has a volume of 0.50L and a pressure of 6.8atm , what is its Kelvin temperature?
2 answers
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6 answers