Question

Calculate the mass if 2.5g of atom
of calcium

Answer 1

Answer:

1 g atom=40 gram

2.5 g atom= 40×2.5=100gram

Explanation:

1g atom = 1 mole

Answer 2

Answer:

1 gm of calcium,relative atomic mass =40

So,

0.25 gm of calcium mass =0.25*40

then,

The answer is :10

hope it helps you...