Question

4. Determine the # of gas particles (in moles) for the following: a. 0.10kg of Ar b. 0.010kg of O2 c. 0.15kg of CO2 d. 1.0kg methane (CHA)

Answer 1

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No. of Moles (gas particle) mass of Gas molar mass of Gras - No. of gu pastacles (in moles) 0.10 kg of Ar (Molar mass of Ar = 40 gram) xlo. of moles 0.10X103 100 40 40 Auswer No. of moles a of 2.5 moles gas t 0.010 kg of Oz (Molar mass of Oxygen gas = 32g) 0.010 x 103 32 10 32 No. of moles Auswert No. of moles of O2 gas- 0.3125 moles ② 0.15 kg of co2 (molar mass of CO2 = 44 -3.409 moles 150 No. of moles - 0.15X103 44 44 Auswey @ No. of moles of CO2 gas 1.409 moles - 3. @ 1.0 kg methane (Cy) (molas mass of CHy = 16 169) No. of moles - 1000 62.5 moles Ans wen a No. of moles of methane gas = 62.5 moles 16