Question

1. Convert the following masses to moles and to number of
molecules (or atoms, if indicated):
(a) 1.0 kg of H2O​

Answer 1

Answer:

1000 g of H20.

One mole of H20 is of 18 g. So,

In 1000g of H20, moles are = (1000/18)

= 55.55

No. of molecules. = 55.55*6.022*10^23

= 334.55*10^23

No. of atoms = (55.55*3)*6.022*10^23

= 166.65*6.022*10^23

= 1003.566*10^23

I hope this helps.