27.7k views
24 votes
what amount of heat is removed to lower the temperature of 80 grams of water from 75°C to 45°C? the specific heat of liquid water is 4.18J/g°C

User Tavo
by
8.0k points

2 Answers

10 votes

Answer:

10032 J must be removed

Step-by-step explanation:

80 gm * (75-45 C) * 4.18 J/g-C = 10032 J

User Elving
by
8.4k points
1 vote

Answer: option A.

Step-by-step explanation:

Q= heat removed from the water

m= mass of the water = 80 grams

c = heat capacity of water= 4.18 J/g°C

Q = -10,032 joules -10,000 Joules

Negative sign indicates that heat was removed from the water

User Chqrlie
by
7.5k points
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