Energy Transfer

Question

What is the change in temperature if 90 grams of steam releases 945 calories of energy

Answer 1

Hi Nick I'm Eddie I can help with your heat problem first you need an equation it's important to write down and understand every equation in Chemistry. Specific heat is the ability of a substance to absorb energy/heat before 1 gram raises 1 C degree typically.

Q = mCΔT

Q = Heat , m = mass, C= specific heat , ΔT = change in temperature

For this problem, the heat is 945 J, the mass is 90 grams and they are asking for a temperature change. C of specific heat is not given a specific heat table would have the value. 1.996 J/gC is the specific heat of water (steam or gas).

945 = 90*(1.996)ΔT

5.26 C = ΔT

The temperature change for the steam is 5.26 C. Hopefully, Nick this explanation is helpful let me know if you like more help with these problems or chemistry feel free to reach out.