What is the specific heat capacity if it takes 1000 J of energy to heat 25 g of this substance by 100°C? Give your answer in J/kg°C.

4000J/kg°C

Explanation:

The quantity of Heat Energy (Q) required to heat substance depends on its Mass (M), specific heat capacity (C) and change in temperature (Φ)

Thus, Q = MCΦ

Since,

Q = 1000joules

M = 25grams (Convert grams to kilograms)

1000grams = 1kg

So, 25grams = (25/1000)kg

= 0.025kg

C = ? (Let unknown value be Z)

Φ = 100°C

Then, apply Q = MCΦ

1000j = 0.025kg x Z x 100°C

1000j = 2.5Kg°C x Z

Divide both sides by 2.5kg°C

1000j/2.5kg°C = (2.5Kg°C x Z)/2.5kg°C

4000J/kg°C = Z

Recall that Z is the specific heat capacity of the substance.

Thus, the specific heat capacity of the substance is 4000J/kg°C

400J/kg°C

Explanation:

E= m×c×(change in temperature)

E= 1000J

m= 25g= 0.025kg

Change in temperature = 100

1000= 0.025×c×100

1000=2.5c

c = 400J/kg°C

report!

explanation:

physics means: "the branch of science concerned with the nature and properties of matter and energy. the subject matter of physics, distinguished from that of chemistry and biology, includes mechanics, heat, light and other radiation, sound, electricity, magnetism, and the structure of atoms."