What is the action of water on calcium carbide?

Complete the following reaction:

$\mathrm{CaO} \left(\mathrm{s}\right) + {\mathrm{H}}_2\mathrm{O} \left(\mathrm{l}\right) \to$

Complete the following reaction:

${\mathrm{Na}}_2\mathrm{O} \left(\mathrm{s}\right) + {\mathrm{H}}_2\mathrm{O} \left(\mathrm{l}\right) \to$

Complete the following reaction:

$\mathrm{Fe} \left(\mathrm{s}\right) + {\mathrm{H}}_2\mathrm{O} \left(\mathrm{g}\right)\to$