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* 10^23molecules`

Mass of one molecule:-

`\\ \sf\longmapsto (18)/(6.023* 10^23)`

`\\ \sf\longmapsto 2.98* 10^24g`