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Some Basic Conc...

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  • Question 1
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    The SI unit of time is:

  • Question 2
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    According to Avogadro's law at the same temperature and pressure:

  • Question 3
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    A compound has an empirical formula of C2HBr. If the molar mass of the compound is 314.7 g/mol, what is the molecular formula of the compound? (Atomic mass of Br = 80g/mol)

  • Question 4
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    Vapour density of a gas is 22. Its molecular mass will be:

  • Question 5
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    Which formula represents the simplest whole number ratio of various atoms present in a compound?

  • Question 6
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    The scientific notation for 0.00016 is:

  • Question 7
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    The prefix used for 10-18 is:

  • Question 8
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    The number of moles of Cr and O in a compound are 4.8 x 1010 and 9.6 x 1010respectively. Its empirical formula is:

  • Question 9
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    If 2 moles of H2 and O2 are available for the reaction, identify the limiting reagent for the reaction, 2H2 + O2 → 2H2O

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