Question

calculate no. of atoms in 0.2 moles of sodium

Answer 1

1 mole of sodium = 6.023 × 10²³ atom

0.2 mole of sodium = 6.023 × 10²³ × 0.2

so, 0.2 mole of sodium = 12.046 × 10²² atom

Answer 2

☺️HERE is your answer ☺️

no. of atoms = no. of molecule × atoms

molecule = Avogadro's number × moles

so, no. of atoms = 6.023×10²³ × 0.2
= 12.046×10²² atoms...

☺️☺️hope it helps you ☺️☺️