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Question:

How do you solve this chemistry problem?

Aluminum has a density of 2.70g/cm^3What is the mass of a rectangular block of aluminum measuring 11.1 cm by 22.2 cmby 32.3 cm?The answer is 21.5 kg, but how do you figure the problem out to get the answer? I know Dm/v, so 2.7g/cm^3 m/v that is as far as I can getThank you for your help.

Answer:

Find the volume of the block of aluminum by multiplying its dimensions together: 11.1 cm X 22.2 cm X 32.3 cm 7959 cm^3 Then, multiply the density by the volume to get the mass: 2.70 g/cm^3 X 7959 cm^3 21490 g Finally divide that by 1000 to convert grams into kilograms and round to 3 significant figures to get 21.5 kg.

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