Which of the following contains the maximum number of molecules? (a) 4 g of O₂ (b) 4 g of NH₃ (c) 4 g of CO₂ (d) 4 g of SO₂

Question

KnowledgeBoat · Accepted Answer

4 g of NH₃ Reason (a) No. of molecules in 4 g of O₂ Molecular wt. of any substance contain 6.022 × 10²³ molecules. Mass of 1 mole of O₂ is 2(16) = 32 g 32 g of O₂ contains 6.022 × 10²³ molecules 4 g of O₂ contains = 7.5 x 10²² molecules. Similarly, (b) 4 g of NH₃ [14 + 3 = 17g ] contains (c) 4 g of CO [12 + 16 = 28g ] contains (d) 4 g of SO₂ [32 + 32 = 64g ] contains 4g of NH₃ having minimum molecular mass contains maximum molecules. Note : The fraction with lowest denominator gives the highest value. Hence, by observation we can say that 4 g of NH₃ has maximum number of molecules.

Chemistry

Which of the following contains maximum number of molecules?
(a) 4 g of O₂
(b) 4 g of NH₃
(c) 4 g of CO₂
(d) 4 g of SO₂

Mole Concept

Related Questions

Find the:
(a) number of moles in 10 g of CaCO₃,
(b) weight of 0.2 mole of H₂ gas,
(c) number of molecules in 3.2 g of SO₂.

Which of the following would weigh most?
(a) 1 mole of H₂O
(b) 1 mole of CO₂
(c) 1 mole of NH₃
(d) 1 mole of CO

Calculate the number of particles in 0.1 mole of any substance.

Calculate the number of hydrogen atoms in 0.1 mole of H₂SO₄.

Chemistry

Which of the following contains maximum number of molecules?(a) 4 g of O2(b) 4 g of NH3(c) 4 g of CO2(d) 4 g of SO2