 Chemistry
4 June, 01:14

# 16. Calculate the amount of heat energy that is needed (7. Calculato raise the temperature of 1000.0 g of sand from ll released21.1 °C to 37.8 °Ctemperatq=m*C*A+a = (1000.0 g) (0.670 J/g°C) (37.8 °C-21.1 °C)a = 11189 Jq = 11200 J (sig figs)18. If 11.500 T of energy is added to a 1000,0 919. If 11

+3
Answers (1)
1. 4 June, 03:12
0
=11189 J

Explanation:

The temperature change i caused by the enthalpy change of the sand and the consequent increase in kinetic energy.

Change in enthalpy = Mass of substance * Specific heat capacity * Temperature change.

ΔH = MC∅

M=1000.0g

C = 0.670 Jg°C

∅ = 37.8°C-21.1°C=16.7°C

ΔH = 1000.0g * 0.670J/g°C * 16.7 °C

=11189 J

Therefore the heat supplied to raise the temperature from 21.1 °C to 37.8°C is 11189 J.
Know the Answer?
Not Sure About the Answer?
Find an answer to your question ✅ “16. Calculate the amount of heat energy that is needed (7. Calcula to raise the temperature of 1000.0 g of sand from ll released 21.1 °C to ...” in 📘 Chemistry if you're in doubt about the correctness of the answers or there's no answer, then try to use the smart search and find answers to the similar questions.