Explain what is meant by the terms
Relative atomic mass
[2]
Relative isotopic mass
[2]
i) State the symbols used for relative atomic mass and relative molecular mass.
[1]
ii) Describe how to calculate the relative molecular mass of a compound.
[1]
iii) State the difference between relative molecular mass and relative formula mass.
[1]
Ionic compounds such as sodium chloride are arranged in a giant three-dimensional lattice structure, with a regular and repeating pattern of positive and negative ions.
State the formula unit of sodium chloride.
Complete Table 1.1
Table 1.1
Chemical | Formula | Relative molecular / formula mass |
Magnesium oxide | MgO |
|
Sulfuric acid | H2SO4 |
|
Ammonium phosphate | (NH4)3PO4 |
|
Copper(II) sulfate pentahydrate | CuSO4•5H2O |
|
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