If 32g of sulphur has x atoms, then the number of atoms in 32g of oxygen will be:

Which of the following pair of elements represents a mole ratio of 1 : 1?

Which of the following correctly represents 360 g water?

(i) 2 moles of H₂O

(ii) 20 moles 0f water

(iii) 6.022 × 10²³ molecules of water

(iv) 1.2044 × 10²⁵ molecules of water

A student wants to have 3.011 × 10²³ atoms each of magnesium and carbon elements. For this purpose, he will have to weigh:

The ratio of moles of atoms in 12g of magnesium and 16g of sulphur will be: