Question

How many moles is 125 g CuO2?

Answer 1

Answer:

1.31moles

Explanation:

Given parameters:

Mass of CuO₂  = 125g

Unknown:

Number of moles  = ?

Solution:

To solve this problem, we use the expression below:

   Number of moles  = $\frac{mass}{molar mass}$  

Molar mass of CuO₂  = 63.6 + 2(16) = 95.6g/mol

So;

 Number of moles  = $\frac{125}{95.6}$   = 1.31moles