(a(i))[1]
State which cation is present at the lowest concentration.
(a(ii))[1]
Name the compound made from Ca2+ and NO3- ions.
(a(iii))[1]
Calculate the mass of sulfate ions contained in 500 cm$^3$ of river water.
(b)[2]
Describe a test you could carry out for iron(III) ions. reagent used observation made
(c(i))[1]
On the structure, circle the alcohol functional group.
(c(ii))[1]
Deduce the formula of compound A so that the numbers of carbon, hydrogen, oxygen and nitrogen atoms are shown.
(c(iii))[2]
Complete the table in order to calculate the relative molecular mass of this compound.