Question

180 ग्राम जल में मोलो की संख्या कितनी होगी​

Answer 1

Answer:

10g

Explanation:

molecular weight of h^2o is 18

so, 180/18 = 10g

Answer 2

10 moles of $H_{2}O$ is present in 180g of water

Explanation:

$H_{2}O$ consists of 2 elements hydrogen(H) and oxygen(O)

Atomic mass of one mole of Hydrogen is 1g

Atomic mass of one mole of Oxygen is 16g

As there are 2 atoms of Hydrogen and 1 atom of oxygen is present in $H_{2}O$ molecule,

Mass of one mole of  $H_{2}O$ is ($1$ × $2$) + ($16$ × $1$) g

= $2 + 16 = 18$g

Number of moles in 180g of $H_{2} O$ = $\frac{180}{18} = 10 mol$

Hence, the answer is 10 of $H_{2}O$ is present in 180g of water.