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What volume of alcohol with a density of 8.4 x 102

What volume of alcohol with a density of 8.4 x 102kgm-3 will have the same mass as 4.2m3of petrol whose density is 7.2 x 102kgm-3?

A.

14m3

B.

3.6m3

C.

4.9m3

D.

5.0m3

E.

5.8m3

View answer & explanation

Correct answer is B

Mass = Density x Volume

4.2 x 7.2 x 102 = v x 8.4 x 102

= 3.6m3

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