A block of iron has a mass of 483 g.What is the mass of a block of graphite that has the same volume as the block of iron? The following densities at 25°C are provided: magnesium, 1.7 g/cm³; graphite, 1.8 g/cm³; iron, 7.9 g/cm³. A)110 g B)2120 g C)6870 g D)34 g E)none of them are within 10 g of the right answer.

Question

Quizplus · Accepted Answer

The volume of the iron block is 483 g / 7.9 g/cm³ = 61.14 cm³. The mass of the graphite block with the same volume is 61.14 cm³ * 1.8 g/cm³ = 110.05 g, which is approximately 110 g.

A Block of Iron Has a Mass of 483 G