Question

calculate the number of atoms in 18 gram water​

Answer 1

Mass of H2O =18 grams

Given, mass of H2O=18 grams

So, no. Of moles =18/18=1mole

No. of atoms = moles*6 x 10^23 *atomicity

=1 x 6 x 10^23 x 3

=18 x 10^23