(a(i))[1]
What does the symbol $\rightleftharpoons$ mean?
(a(ii))[1]
What is the function of the catalyst?
(b(i))[1]
Describe how the percentage yield of ammonia varies with temperature.
(b(ii))[1]
Deduce the percentage yield of ammonia at $400\,^{\circ}\text{C}$.
(c)[1]
If 20 g of copper(II) oxide react with excess ammonia, 16 g of copper are produced. Calculate the mass of copper formed when 140 g of copper(II) oxide react with excess ammonia.
(d)[1]
Give a single use of nylon.