Question

What is the volume of a piece of iron ( = 7.9 g/cm3) that has a mass of 0.75 kg? (Enter your answer in cm3.) answer in: cm3

Answer 1

We will have the following:

`\begin{gathered} (7.9g)/(cm^3)\ast(1kg)/(1000g)=(0.75kg)/(V)\Rightarrow0.0079kg/cm^3=(0.75kg)/(V) \\ \\ \Rightarrow V=(0.75kg)/(0.0079kg/cm^3)\Rightarrow V=(7500)/(79)cm^3 \\ \\ \Rightarrow V\approx94.9cm^3 \end{gathered}`

So, the volume is 7500/79 cm^3, that is approximately 94.9 cm^3.