Question

20.Which of the following correctly represents 360 g of water?
(i) 2 moles of H2O
(ii) 20 moles of water
(iii) 6.022 x 1023 molecules of water
(iv) 1.2044 x 1025 molecules of water
(a) (0)
(b) (i) and (iv)
(c) (i) and (iii)
(d) (ii) and (iv)​

Answer 1

Answer:

=> The molar mass of water is 18 g/mol.

=> 360 g of water corresponds to

360/18=20mol.

=> It is also equal to 20mol×6.023×10*23molecules/mol= 1.2044×10*25 molecules.

=> Thus, the options (d) (ii) and (iv) correctly represents 360 g of water.