(a)[3]
Draw an energy profile diagram for this reaction on the axes shown. On the diagram, label the reactants, products, the enthalpy change for the reaction, and the activation energy.
(b)[1]
Explain why propenenitrile causes aqueous bromine to lose its colour.
(c)[2]
The structure of propenenitrile is shown. Draw the structure of the addition polymer made from propenenitrile.
(d(i))[2]
State any two physical properties of molybdenum.
(d(ii))[2]
Molybdenum reacts with chlorine at room temperature to make molybdenum(VI) chloride, MoCl$_6$. Write an equation for this reaction and include state symbols.