Question

Calculate the mass of 2.8 litres of CO2. [C = 12, O = 16]

  • Mole Concept
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Answer

Gm mol. wt. of CO2 = 12 + (16 × 2) = 44 g

22.4 lit of CO2 has mass = 44 g [s.t.p.]

⇒ 2.8 lit of CO2 has mass = 44\over 22.4 × 2.8 = 5.5 g

Therefore, mass of 2.8 litres of CO2 is 5.5 g

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