A sample of water with a mass of 622.7g undergoes a temperature change from 90.98°C

to 96.70°C. What is the heat change in Joules? Cwater=4.18J/g°C

A) 0251608.10

B) 3561.8J

C) 14888.5)

D) 2.51X105)

Question

Chemistry

Romeo Whitaker

23 December, 08:10

A sample of water with a mass of 622.7g undergoes a temperature change from 90.98°C

to 96.70°C. What is the heat change in Joules? Cwater=4.18J/g°C

A) 0251608.10

B) 3561.8J

C) 14888.5)

D) 2.51X105)

+3

Answers (1)

Know the Answer?

Christine Greer · Answer 1

C) Q = 14888.5 J

Explanation:

Q = mCΔT

∴ m H2O = 622.7 g

∴ C H2O = 4.18 J/g°C

∴ ΔT = 96.7°C - 90.98°C = 5.72°C

⇒ Q = (622.7 g) (4.18 J/g°C) (5.72°C)

⇒ Q = 14888.508 J

A sample of water with a mass of 622.7g undergoes a temperature change from 90.98°Cto 96.70°C. What is the heat change in Joules? Cwater=4.18J/g°CA) 0251608.10B) 3561.8JC) 14888.5)D) 2.51X105)

A sample of water with a mass of 622.7g undergoes a temperature change from 90.98°C

to 96.70°C. What is the heat change in Joules? Cwater=4.18J/g°C

A) 0251608.10

B) 3561.8J

C) 14888.5)

D) 2.51X105)