Question

Moles of H2O in 18 cm3 of water are

Answer 1

Explanation:

Density of water(d) = 1 g/cc

According to the formula, Mass(m)=Density(d)* Volume(v)

Hence mass of 18 cc of water =1*18 g =18 g

Molar mass of water is 18 g/mol.

No. of moles of water= 1

1 mole of any substance would contain 6.023* 10^23 no. of electron, atom, ion, molecule depending on the nature of the substance, known as Avogadro’s number.

Hence, number of molecules present in 18 cc of water is 6.023* 10^23.