3.3 - SPECIMEN SET C2 Q4 Answers
4.1) The medicine is a formulation.
What is meant by a formulation? [1 mark]
4.2) Children often do not like taking medicine.
Suggest a substance that could be added to Aqamed to increase the desire for children to take it.
Give a reason for your suggestion. [2 marks]
4.3) The main ingredient in Aqamed is a painkiller called paracetamol.
Figure 8 represents a molecule of paracetamol.
Calculate its relative formula mass (Mr).
Relative atomic masses (Ar): H = 1; C = 12; N = 14; O = 16 [2 marks]
Molecular formula _________________________________________
Relative formula mass _________________________________________
Mr = _________________________________________
Aspirin is a medicine for use by adults.
An aspirin tablet contains 300 mg of acetylsalicylic acid.
Calculate the number of moles of acetylsalicylic acid in one aspirin tablet.
Give your answer in standard form to three significant figures.
Relative formula mass (Mr) of aspirin = 180 [4 marks]
Number of moles = ____________________________
(Total for Question 4 = 9 marks)