Final answer:
The density of a block of metal with a mass of 85g and a volume of 6.35mL is calculated using the formula Density = Mass ÷ Volume, which yields a density of 13.39 g/mL. Thus, the correct answer is (a) 13.39 g/mL.
Step-by-step explanation:
To calculate the density of a block of metal with a mass of 85g and a volume of 6.35mL, we use the density formula:
Density = Mass ÷ Volume
Substituting the provided values:
Density = 85g ÷ 6.35mL = 13.39 g/mL
Therefore, the correct answer is (a) 13.39 g/mL. As we see, the formula for density is straightforward and can be applied to various materials. For example, mercury has a known density, so if we were asked for the mass of a certain volume of mercury, we simply multiply the density by the volume.