Question

calculate the number of moles present in 5.4g of water.

please answer fast and give correct answer​

Answer 1

Answer:

0.3 moles

Explanation:

no. of moles = given mass/molecular mass

here,

given mass = 5.4 g

molecular mass of water of H₂O =>

H = 1 u

so, H₂ = 2 x 1 = 2 u

O = 16 u

so, molecular mass of H₂O = 16 + 2 = 18 u

Now,

no. of moles = 5.4/18

=> 0.3 moles