How can I solve this problem?

The problem is:

Find the total heat needed to evaporate 200 g of ice at -5 degrees celsius in a 175 grams beaker.

You need to include the two phase changes.

cp-cv=r

First, find the energy to raise the temperature of the ice cube to 0 Celsius
Then, find the amount of energy required to melt the ice.
Afterwards, find the energy to raise the water temperature to 100 Celsius
Finally, find the amount of energy required to evaporate the water.

You should know your equations;

Q=mc\theta for changes in temperatures

Q = mL for changes in state.

Hope it helped! :)

The 175 gr beaker is there to confuse you. Don't use it.