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Mole Concept & Basic Conversions

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  1. 1.

    The mass of one molecule of H2SO4 is:

  2. 2.

    At STP, 5.6 L of a gas weighs 11 g. The molar mass of the gas is:

  3. 3.

    The number of atoms in 4.25 g of NH3 is:

  4. 4.

    The vapour density of a gas is 22. Its molar mass is:

  5. 5.

    How many molecules are present in 9 g of water?

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