A physics lecture room at 1.00 atm and 27.0C has a volume of 216 m3. (a) Use the ideal-gas law to estimate the number of air molecules in the room. Assume that all of the air is N2. Calculate (b) the particle density—that is, the number of N2 molecules per cubic centimeter— and (c) the mass of the air in the room.

A physics lecture room at 1.00 atm and 27.0C has a volume of 216 m3. (a) Use the ideal-gas law to estimate the number of air molecules in the room. Assume that all of the air is N2. Calculate (b) the particle density—that is, the number of N2 molecules per cubic centimeter— and (c) the mass of the air in the room.

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