Question text
15 A metal block has a mass of 750 g. Magnesium makes up 60% of the mass and the remaining 40% is copper. The density of magnesium is 1.7 g cm–3. The density of copper is 9.0 g cm–3. What is the density of the block? A 2.5 g cm–3 B 4.6 g cm–3 C 5.4 g cm–3 D 10.7 g cm–3
15 A metal block has a mass of 750 g. Magnesium makes up 60% of the mass and the remaining
40% is copper.
The density of magnesium is 1.7 g cm–3.
The density of copper is 9.0 g cm–3.
What is the density of the block?
A 2.5 g cm–3 B 4.6 g cm–3 C 5.4 g cm–3 D 10.7 g cm–3
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