The measure of AOB is 2x, find the value of x.* w
c
90 degrees
50 degrees
70 degrees
45 degrees

The heat transferred is 157 kJ.

Step-by-step explanation:

Given : If 75 g of liquid water ( C = 4.18 j/g C ) in a calorimeter changes temperature from 25 C to 75 C.

To find: How much heat was transferred ?

Solution :  

Using the formula,

Where,

q - heat absorbed

c  - the specific heat of the substance, in your case of water

ΔT  - the change in temperature, as the difference between the final temperature and the initial temperature.

We have given,

c=4.18 j/g C

m=75 g

ΔT= 75 C-25 C=50 C

Substitute the values in the formula,

Therefore, The heat transferred is 157 kJ.