Skip to content

Course home

Question bank·2.6 Calculations involving masses
Sign up

2.6 Calculations involving masses

EasyMediumHard
1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465666768697071727374
Question 4

A student needs a sample of sodium chloride containing 1.204 × 1023 formula units of NaCl\mathrm{NaCl}NaCl. Use Mr(NaCl)=58.5M_r(\mathrm{NaCl}) = 58.5Mr​(NaCl)=58.5 and the Avogadro constant 6.02 × 1023 mol-1. Which mass of sodium chloride should the student weigh out?

[1]
A

11.7 g11.7\ \mathrm{g}11.7 g

B

292.5 g292.5\ \mathrm{g}292.5 g

C

0.00342 g0.00342\ \mathrm{g}0.00342 g

D

0.200 g0.200\ \mathrm{g}0.200 g

Markscheme

2.6 Calculations involving masses Questions

  1. GCSE
  2. /Chemistry
  3. /2.6 Calculations involving masses

142 exam-style questions on Edexcel GCSE Chemistry 2.6 Calculations involving masses, covering 2.6.1 Relative formula mass and percentage composition, 2.6.2 Empirical and molecular formulae, 2.6.3 Conservation of mass, 2.6.4 Reacting masses and concentration in g dm⁻³, 2.6.5 The mole and the Avogadro constant, and 2.6.6 Limiting reactants and stoichiometry. Each one has a worked solution and a mark scheme showing where the marks go.

More questions