Question

How much energy in joules does it take to raise the temperature of 255g of water by 12.5C

Answer 1

Answer: The amount of energy required to raise the temperature is 13323.75 joules.

Explanation :

The amount of energy required to raise the temperature can be calculated as follows.

`q = m* C* \bigtriangleup T`

where,

q = heat energy

m = mass of water

C = specific heat

T = temperature

Remember that the specific heat of water is
`4.18\left ( (J)/(g^\circ C)} \right )`.

Therefore, putting the values in the above equation as follows.

`q = m* C* \bigtriangleup T`

`= 255 g * 4.18 \left ( (J)/(^\circ C)} \right )* 12.5^oC`

= 13323.75 joules

So, the amount of energy required to raise the temperature is 13323.75 joules.

Answer 2

Energy in a system can be calculated by multiplying the given mass to the specific heat capacity of the substance and the temperature difference. It is expressed as follows:

Energy = mC(T2-T1)
Energy = 255(4.184)(12.5)
Energy = 13336.5 J