Question

Which of the following pair of elements represents a mole ratio of 1 : 1 ?
(a) 10 g of calcium and 12 g of magnesium
(b) 12 g of magnesium and 6 g of carbon
(c) 12 g of carbon and 20 g of calcium
(d) 20 g of sodium and 20 g of calcium

Answer 1

(b) 12 g of magnesium and 6 g of carbon
12 g of magnesium and 6 g of carbon will have a mole ratio of 1 : 1.