Question

calculate no. of moles in 0.293 gm of water

Answer 1

Number of moles = given weight / molar weight

= 0.293 / 18

= 0.0162 moles

Hope this helps!

Answer 2

gram atomic mass of water H2O=(1*2+16)=18 gm
no of moles in 18 gms of water =1
no of moles in 1 gm of water =1/18
no of moles in 0.293 gm of water= 0.293/18=0.02
so no of moles is 0.02 moles (approx)