Answer:
31.5 moles 
Step-by-step explanation:
Volume of H2O = 0.567 L
Number of mole of H2O =.?
Next, we shall convert 0.567 L to millilitres (mL). This can be obtained as follow:
1 L = 1000 mL 
Therefore, 
0.567 L = 0.567 L × 1000 mL / 1 L 
0.567 L = 567 mL 
Thus, 0.567 L is equivalent to 567 mL.
Next, we shall convert 567 mL to grams (g). This can be obtained as follow:
1 mL of H2O = 1 g
Therefore
567 mL of H2O = 567 g of H2O 
Finally, we shall determine the number of mole in 567 g of H2O. This can be obtained as follow:
Mass of H2O = 567 g
Molar mass of H2O = (2×1) + 16
= 2 + 16 = 18 g/mol
Mole of H2O =? 
Mole = mass /Molar mass 
Mole of H2O = 567 /18 
Mole of H2O = 31.5 moles