HI Four groups of corn are given different types of natural fertilizer: fish emulsion,

You will need 7.953 kJ heat energy to raise the temperature of water from 277K to 315K.

Explanation:

To calculate how much heat is needed to raise the temperature of any substance, you need:

The mass of the substance,  m, which for you is 50.0 g

The temperature change that occurs,  ΔT, which for you is:

Δ

The specific heat capacity of the substance,  c,

For water, the value of  c  is  4.186J/gK

Then, this is the equation you need:

ΔT

Where Q is the heat needed

So,  

You need 7.953 kJ to raise the temperature of water from 277K to 315K.