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1 November, 09:38

State whether the following statements are true or false (with justification). (a) 1 mol of N2 has more molecules than 1 mol of Ar. (b) 1 mol of N2 has more mass than than 1 mol of Ar. (c) The molar mass of N2 is greater than the molar mass of Ar

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  1. 1 November, 10:02
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    A. False.

    Every substance contains the same number of molecules i. e 6.02x10^23 molecules

    B. False.

    Mass conc. = number mole x molar Mass

    Mass conc. of 1mole of N2 = 1 x 28 = 28g

    Mass conc. of 1mol of Ar = 1 x 40 = 40g

    The mass of 1mole of Ar is greater than the mass of 1mole of N2

    C. False.

    Molar Mass of N2 = 2x14 = 28g/mol

    Molar Mass of Ar = 40g/mol

    The molar mass of Ar is greater than that of N2.
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