Answer:
The answer is 4 pounds
Explanation:
The explanation is that 1 kilogram is equal to 2 pounds so multiply the kilogram with the 1 pound
2 near the middle
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Answer:
The mass of air in the box is 0.78 grams.
Explanation:
A litre equals a cubic decimetre. By definition of density (
), in grams per litre, we calculate the mass of air inside the cube (
), in grams:
(1)
Where 
is the volume occupied by air within the cube, in litres.
If we know that 
and 
, then the mass of air is:
The mass of air in the box is 0.78 grams.
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