Question

calculate the moles in 5 gram of water

Answer 1

5/18 moles for 5 grams of water.

Answer 2

Water consists of H2O molecule

So, molecular mass of water = 1×2+16=18u.

Now,

1 mile of water = molecular mass of water in grams

If 18g of water = 1mole

Then, 5g of water = 1/18×5

=0.27moles.