Question

Calculate the amount of copper in moles in a 35.8g pure copper sheet

Answer 1

1) 
Find the Molar mass of Cu on the periodic table: 
Cu = 63.546g/mol 
Moles = Grams / Molar mass of Cu 
35.8 / 63.546 = 0.563mols of Cu 

Answer 2

Answer: 0.564 moles of copper is there.

Explanation: We are given:

Given mass = 35.8 g

Molar mass of copper = 63.5 g/mol

Moles can be calculated using the formula:

$\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}$

Putting values in above equation, we get

$\text{Number of moles}=\frac{35.8g}{63.5g/mol}$

Number of moles = 0.564 moles