This coffee machine takes Dolce Gusto Pods but after checking, it doesn't look as if there is a mocha pod.
#3 How many coffees can you make out a full water pot?
The Krups Nescafe Dolce Gusto Genio S Touch Pod Coffee Machine holds a Water capacity of 0.8 litre it would be hard to say how many cups it will hold as this depends on the size of the cup you use.