Question

Please answer

Question 1 (3 points)
If a glass of water containing 40g at 20 degrees C is heated to 50 degress C, what is the amount of energy gained?

Answer 1

The amount of energy gained : 5016 J

Further explanation

Heat can be calculated using the formula:

Q = mc∆T

Q = heat, J

m = mass, g

c = specific heat, joules / g ° C

∆T = temperature difference, ° C / K

mass water = 40 g

c water = 4.18 J/g C

∆T = temperature difference = 50 - 20 = 30 C

Heat gained :

`\tt Q=40* 4.18* 30\\\\Q=5016~J`