Answer:
The answer to your question is 2 moles
Step-by-step explanation:
Data
mass of H₂O = 36 g
moles of H₂O = ?
Process
1.- Calculate the molar mass of water (H₂O)
H₂O = (1 x 2) + (16 x 1) = 2 + 16 = 18 g
2.- Use proportions and cross multiplication to find the answer.
 18 g of H₂O ---------------- 1 mol
 36 g of H₂O --------------- x
 x = (36 x 1) / 18
 x = 36/18
  x = 2 moles