We’re being asked to determine the mass of 2.00 moles of gas at standard temperature and pressure, given its density.
Recall that standard temperature and pressure (STP) is defined as 1 atm and 0 ˚C.
The density of a gas is given by:
P = pressure (in atm) R = gas constant (0.08206 atm • L/mol • K)
T = temperature (in K) M = molar mass
d = density
The density of a gas is 1.96 g/L at STP. What would the mass of 2.00 moles of the gas be at STP?
1. 87.8 g
2. There is not enough information to solve.
3. 44.8 g
4. 0.0875 g
5. 43.9 g
6. 0.510 g
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