# Question #20d3d

Mar 1, 2017

The molar ratio of $\text{Cr}$ to $\text{Cu}$ is 1:1 = 1

The chemical equation is

$\text{Cr" + "CuSO"_4 → "CrSO"_4 + "Cu}$

The equation tells you that 1 mol of $\text{Cr}$ produces 1 mol of $\text{Cu}$.

Therefore, the molar ratio is

$\text{Moles of Cr"/"Moles of Cu} = \frac{1}{1} = 1$

The 1 is an integer, so it has an infinite number of significant figures.