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Density of Air

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The density of air at ordinary atmospheric pressure and 25 0C is 1.19 g/L. What is the mass of air, in kg, in a room that measures 12.5 ft by 15.5 ft by 8.0 ft?

Please provide a detailed explanation.

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Solution Preview

1. Solve for the volume of the room.

Volume = 12 5 ft (15.5 ft) (8 ft)
Volume = 1550 ft3

2. Convert volume of room from ft3 to liter

Useful Conversion factors:
12 in = 1 ft
1 in = 2.54 ...

Solution Summary

The density of air in a room at ordinary atmospheric pressure is determined.

$2.19