Question

Number of particles in 0.75 mole of Helium

Answer 1

Answer:

x=4.5165×10²³ particles

Explanation:

1 mole contain Na particles so,

1 mole Ǝ 6.022 × 10²³ particles

0.75 Ǝ x particles

so x=(6.022 × 10²³)·0.75⇔x=4.5165×10²³ particles