Question

Find the
no. of atom present in
20 g of calcium .​

Answer 1

Answer:

the correct answer is as follows

in decimals is

12.044* 10²³

Answer 2

Answer:

Mole concept

Explanation:

★ No. of atoms / Avagadro No. = weight of element / molecular mass ★

By using the above relation ;

» No. of atoms = 20 g / 40 × 6 × 10-²³

» No. of atoms = 3 × 10²³ .