A simple model of the atom, symbols, relative atomic mass, electronic charge and isotopes

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Question 8
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This question is about magnesium.

a.

Which type of substance is magnesium?

  • Compound
  • Element
  • Mixture
[1]
b.

A sample of 24 g24\text{ g}24 g of magnesium contains 6.02×10236.02 \times 10^{23}6.02×1023 atoms. Which expression is used to calculate the mass of one atom of magnesium in grams?

  • 246.02×1023\frac{24}{6.02 \times 10^{23}}6.02×102324​
  • 6.02×102324\frac{6.02 \times 10^{23}}{24}246.02×1023​
  • 24×6.02×102324 \times 6.02 \times 10^{23}24×6.02×1023
[2]

A simple model of the atom, symbols, relative atomic mass, electronic charge and isotopes Questions

  1. GCSE
  2. /Chemistry
  3. /A simple model of the atom, symbols, relative atomic mass, electronic charge and isotopes