WEBVTT

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This is Giancoli Answers
with Mr. Dychko.

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Density is mass divided by volume

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and we can solve for by multiplying
both sides by <i>V</i>.

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So we get the mass of the air
in the room is

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the density of air times
the volume of the room.

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Air density is about 1.29 kilograms
per cubic meter

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and the volume of the room will be

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its length times its width times its height

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so that's 5.6 times 3.6
times 2.4 meters

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and that gives about 62 kilograms
total mass of the air.