he density of iron is 7.8 g/cm3, what is the mass of 5 cm3 of it in grams?
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Answer: The mass of iron is .
Explanation:
As density of a substance is defined as its mass per unit volume. The density of a material is a measurement of how closely it is packed.
where d is the density, m is the mass of substance and V is the volume.
Now density of iron
Volume
To calculate the mass of iron;
Mass of iron
Therefore mass of iron in grams is .
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