Question

What is the mass of 1 mol of Ca atoms to three significant Figures of CaSO4

Answer 1

40g

Step-by-step explanation:

Given parameters:

Number of moles = 1mol

unknown:

mass of Ca = ?

Solution:

The number of moles of a substance is related to mass using the expression below;

Mass = number of moles x molar mass

Molar mass of Ca = 40g/mol

So;

Mass of Ca = 1 mol x 40g/mol = 40g