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4 November, 23:55

What is the mass, in grams, of 0.125 L of CO2 at STP? Question 4 options: 2.80 g 181 g 0.246 g 4.11 g

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  1. 5 November, 00:19
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    1) Use the fact that 1 mol of gas at STP occupies 22.4 liter

    => 1 mol / 22.4 l = x / 0.125 l = > x = 0.125 l * 1 mol / 22.4 l = 0.00558 mol

    2) Now use the molar mass of the gas

    molar mass of CO2 ≈ 44 g / mol

    Formula: molar mass = mass in grams / number of moles = >

    mass in grams = molar mass * number of moles = 44 g/mol * 0.00558 moles

    mass = 0.246 g

    Answer: 0.246 g
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Home » Chemistry » What is the mass, in grams, of 0.125 L of CO2 at STP? Question 4 options: 2.80 g 181 g 0.246 g 4.11 g
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