Question

How many mole are present in 76.8 g of copper

Answer 1

Answer:

Explanation:

1 mole of Cu weighs = 63.5 g

Number of mole of Cu= 76.8/63.5= 1.21moles

Hope helps u.......

Answer 2

Answer:

mass of copper=76.8 g

Molar mass of copper=63.5 gmol-1

Number of moles (n)= Mass

_____

Molur mass

n=76.8

____=1.21 moles

63.5.