Which of the following correctly represents 360 g of water?

• GC Atomic Structure

Which of the following correctly represents 360 g of water?

1. 2 moles of H₂O
2. 20 moles of water
3. 6.022 × 10²³ molecules of water
4. 1.2044 × 10²⁵ molecules of water

Select the correct option:

1. (i)
2. (i) and (iv)
3. (ii) and (iii)
4. (ii) and (iv)

Answer

1 mole of water = molar mass of water = 18 g

20 moles of water = 18 g × 20 = 360 g

1 mole of water = 6.022 × 10²³ molecules of water

So, 20 moles of water  = 1.2044 × 10²⁵ molecules of water

The correct option is D.