Question

atomic mass of some elements are given.(Mg=24,O=16)
How many atoms are there in 120g mg?
Find the mass of 4×6.022×10^23​

Answer 1

Explanation:

In 120g of Mg there are 5 moles of Mg

Answer 2

Explanation:

24g of Mg contains 6.022×10^23 atoms

120g of Mg contains (6.022×10^23×120)/24

=30.11×10^23 atoms

=3.011×10^24 atoms