Skip to content

Course home

3.2 Use of amount of substance in relation to masses of pure substances

3.2 Use of amount of substance in relation to masses of pure substances

EasyMediumHard
12345678910111213141516171819202122232425262728
Question 4

Borospherene is a cage-like cluster molecule with the chemical formula B40\text{B}_{40}B40​.

Calculate the number of B40\text{B}_{40}B40​ molecules that can be formed from 0.180.180.18 moles of pure boron atoms.

Give your answer in standard scientific form to two significant figures.

The Avogadro constant =6.02×1023 per mole= 6.02 \times 10^{23}\text{ per mole}=6.02×1023 per mole.

[3]
Markscheme

3.2 Use of amount of substance in relation to masses of pure substances Questions

  1. GCSE
  2. /Chemistry
  3. /3.2 Use of amount of substance in relation to masses of pure substances

38 exam-style questions on AQA GCSE Chemistry 3.2 Use of amount of substance in relation to masses of pure substances, covering 3.2.1 Moles (HT only), 3.2.2 Amounts of substances in equations (HT only), 3.2.3 Using moles to balance equations (HT only), 3.2.4 Limiting reactants (HT only), and 3.2.5 Concentration of solutions. Each one has a worked solution and a mark scheme showing where the marks go.

Question bank