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24 May, 14:32

How many moles (of molecules or formula units) are in each sample? Part A 42.37 g CF2Cl2 Express your answer to four significant figures.

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  1. 24 May, 17:09
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    0.3504 mol of CF₂Cl₂.

    Explanation:

    We need to know the molar mass of CF₂Cl₂ to find out the moles

    Molar mass of C = 12 g/mol

    Molar mass of F = 19 g/mol

    Molar mass of Cl = 35.45 g/mol

    Molar mass of CF₂Cl₂ = 12 + 19. 2 + 35.45. 2 = 120.9 g/mol

    Now we determine the moles of our mass

    42.37 g. 1 mol / 120.9 g = 0.3504 mol
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