Question

calculate the number of calcium ions in 5.6g of calcium oxide

Answer 1

Calcium oxide(CaO) mass is 56
no. of moles In 5.6 g CaO=0.1
no. of CA atom in 0.1 mole=0.1 mole×Na
ans-6.022×10^22

Answer 2

Calcium
Given mass=5.6g
Molar mass= Ca=20
No of ions (moles)=given mass /molar mass
=5.6/20=0.28

Answer 3

Calcium
Given mass=5.6g
Molar mass= Ca=20
No of ions (moles)=given mass /molar mass
=5.6/20=0.28