Question

1. If one gram of Sulphur contains x atoms, calculate the number of atoms in one gram of oxygen element. (Atomic mass: S = 32 u; O = 16 u)

2. How many grams of magnesium will have the same number of atoms as 6 grams of Carbon?

(Mg = 24 u; C = 12 u)

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Answer 1

Answer:

022×1023 atoms i.e avogadro's number. et number of sulphur atoms be x. Therefore, in 32g of oxygen it contains 2 moles as atomic mass of oxygen is 16g(mol)−1 and hence it will contain 2×6.