Megan McLean
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AS Chem (Chem 1) Quiz on Amount of substance, created by Megan McLean on 14/05/2014.

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Megan McLean
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Amount of substance

Amount of substance

Question 1 of 9

1

The relative atomic mass can be defined by......

Select one or more of the following:

  • Average mass of one atom of an element x 12
    -------------------------------------------------------------------
    Mass of an atom of C12

  • Average mass of one atom of an element x 12
    -------------------------------------------------------------------
    Mass of 1/12th of an atom of C12

Explanation

Question 2 of 9

1

Number of moles.....

Select one or more of the following:

  • m/mr

  • mr/m

Explanation

Question 3 of 9

1

Ideal gas equation is.....

Select one or more of the following:

  • PV/T

  • PV=nRT

Explanation

Question 4 of 9

1

How do you calculate the molecular formula?

Select one or more of the following:

  • Relative mass of empirical formula
    -----------------------------------------------------
    Relative molecular mass

  • Relative molecular mass
    ------------------------------------------------------
    Relative mass of empirical formula

Explanation

Question 5 of 9

1

Concentration = ...........

Select one or more of the following:

  • Volume in dm
    ---------------------------
    Number of moles

  • Number of moles
    ----------------------------
    Volume in dm

Explanation

Question 6 of 9

1

Number of moles in solution....

Select one or more of the following:

  • M x 1000
    -------------
    V

  • M x V
    ----------
    1000

Explanation

Question 7 of 9

1

Atom Economy (%)......

Select one or more of the following:

  • Mass of desired product
    ------------------------------------ x1000
    Total mass of product

  • Mass of desired product
    ---------------------------------- x100
    Total mass of product

Explanation

Question 8 of 9

1

Yield of a chemical reaction......

Select one or more of the following:

  • The number of moles or grams of a specified product
    -------------------------------------------------------------------------------- x 100
    Theoretical maximum number of moles or grams of
    the product

  • The number of moles or grams of a specified product
    -------------------------------------------------------------------------------- x 1000
    Theoretical maximum number of moles or grams of
    the product

Explanation

Question 9 of 9

1

Yield of a chemical reaction......

Select one or more of the following:

  • The number of moles or grams of a specified product
    -------------------------------------------------------------------------------- x 100
    Theoretical maximum number of moles or grams of
    the product

  • The number of moles or grams of a specified product
    -------------------------------------------------------------------------------- x 1000
    Theoretical maximum number of moles or grams of
    the product

Explanation

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