Wednesday, 15 May 2013

1.19 carry out mole calculations using relative atomic mass (Ar ) and relative formula mass (Mr )

Mole calculations

 The mass of one mole of atoms is easily calculated, it is simply the relative atomic mass expressed in grams.

 Hydrogen- Ar=1 so 1g
Carbon- Ar= 12 so 12g

 The mass of one mole of a substance is also easily calculated by working out the formula mass (Mr) and expressing it in grams:

 H₂ - Mr = 2 so mole is 2g
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1 comment:

  1. Elizabeth J. Neal10 July 2013 at 06:20

    The mass of one mole of atoms mole removal is easily calculated, it is simply the relative atomic mass expressed in grams.

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