Question

Calculate the mass of 1 molecule of water
with step

Answer 1

Molecular Mass of water:-

$\\ \sf\longmapsto H_2O$

$\\ \sf\longmapsto 2(1u)+16u$

$\\ \sf\longmapsto 2u+16u$

$\\ \sf\longmapsto 18u$

$\\ \sf\longmapsto 18g$

1mole of water weighs 18g

We know

$\\ \sf\longmapsto 1mol=6.023\times 10^23molecules$

Mass of one molecule:-

$\\ \sf\longmapsto \dfrac{18}{6.023\times 10^23}$

$\\ \sf\longmapsto 2.98\times 10^24g$