Question

20 gm of water .. convert into mole​

Answer 1

for this we have to

water =H²O =2*1+16=18g

no of moles in 29gm of water=20/18=1.11mole

hope this answers helps u

Answer 2

Water = H2O

Molar mass of Water =

Atomic mass of 2H × Atomic mass of O

That is,

2 × 1 + 16 × 1 = 18u

Therfore molar mass of Water is 18g

Number of moles :

$\frac{given \: mass}{molar \: mass}$

That is,

Given mass of water = 20grams.

Molar mass of water = 18grams.

Therefore,

Number of moles :

$\frac{20}{18}$

$1.11111.......$

Number of moles = 1.111....in 20 grams of water.