2.5 m
There's 7.79215x10^26 N2 molecules. A single molecule = 14.007u. So you work out the total mass contained within the subset of consideration: (total number of N2 molecules ) x (2 x weight of single N molecule). Then consider the density of the subset of the mass rho = 0.75518 x 1.2. Then density = mass/ volume => height = mass/(16x1.2x0.75518)
Congrats, that's the correct solution!
You are the winner of this round.
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That was really creative to calculate the heigth of the room by the number of N2 molecules in it!
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Congrats . Now, i know where I'm off.
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Excellent work
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