Which of the following correctly represents 360 g of water?

(i) 2 moles of H₂O

(ii) 20 moles of water

(iii) 6.022 × 10²³ molecules of water

(iv) 1.2044×10²⁵ molecules of water

(ii) and (iv) options correctly represent 360g of water.

(ii) 1 mole of water = molar mass of water = 18g

Thus, 20 moles of water = 18g x 20 = 360g

(iv) 1 mole of water = 6.022 x 10²³ molecules of water = 18g of water

Thus, 1.2044×10²⁵ molecules of water =

= 360g