How many grams of oxygen are contained in 18g of water?

Answer 1

The molar mass of water(H2O)=18((1*2)+16)

The no. of moles(n) of water in 18 g of water=mass/molar mass=18 g/ 18 g mol-1 =1 mol

The no. of molecules of water in 18 of water=n*Avogadro no. =1 mol*6.022*1023 mol-1 =6.022*1023

The no. of atoms of oxygen in one mole of water=1 mol

The no. of atoms of oxygen in 6.022*1023mol of water= 6.022*1023

Answer 2

how many grams of oxygen in 18 grams of water

Answer 3

602,000,000,000,000,000,000,000 (6.02 X 10^23) Oxygen atoms.