State how the melting point and density of iron compare with those of calcium.
Explain the reasons for these differences, making reference to melting point and density.
Finish the diagram by adding the parts needed to show the complete circuit. Label the components you add.
In the spaces provided, identify or describe what A-D stand for.
Use the Data Booklet to calculate the $E^\circ$ of this cell.
Predict how the size of the overall cell potential would change, if at all, when the concentration of solution C is increased. Explain your answer.
Describe how the end point of this titration would be recognised.
Calculate: the number of moles of $\text{Fe}^{2+}$ in the capsule; the iron mass in the capsule; the molar mass of the iron(II) complex, assuming $1\ \text{mol}$ of the complex contains $1\ \text{mol}$ of iron.