Question

calculate the number of molecules present in 1 litre of water assuming that the density of water is 1g ml -1 .... plzzz somebody help me to solve this question​

Answer 1

3.34×10²⁵

Explanation:

Given,density of water = 1g/ml

Volume of water = 1000ml

so,mass of water = 1000×1 = 1000grams

moles of water present in 1000 grams = 1000/18 = 55.55

molecules present in 1 litre of water = 55.55×6.02×10²²

= 3.34×10²⁵ molecules