(a(i))[1]
Calculate the mass of calcium ions in a 20 cm^{3} portion of this milk.
(a(ii))[1]
Which positive ion appears in the greatest concentration in this milk sample?
(a(iii))[1]
Name the compound made from Mg^{2}⁺ and SO₄^{2}⁻ ions.
(a(iv))[3]
Describe a test for chloride ions.\n\nprocedure\nobservation
(b(i))[1]
On the displayed structure, circle the carboxylic acid functional group.
(b(ii))[1]
Deduce the molecular formula of lactic acid, showing how many carbon, hydrogen and oxygen atoms there are.
(c(i))[1]
What does the term reduction mean?
(c(ii))[2]
Fill in the table to find the relative molecular mass of ethanol.