Question

Which of these weighs most?
(1) 32 g oxygen
(2) 2 g atom of nitrogen
(3) 0.5 mole of iron
(4) 3.01 * 10% atoms of carbon​

Answer 1

Answer:

(1) 32g of oxygen.......

Answer 2

Answer:

1 is correct

Explanation:

(i) 32 g of oxygen weighs most. (ii) 2 g atom of H2 = 2g (iii) 0.5 mole of Fe = mole × atomic weight = 0.5 × 56 = 28 g (iv) 6.022 × 1023 = 1 atom of d 3.01 × 1023 atoms of C = 1/2 × 12 = 6 g.