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13. A sample of liquid water at 30.0 C is cooled to -5.0 C,

13d. How much energy is in the system if you begin with 32.6 g of liquid water?

User Telos
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1 Answer

5 votes

Answer:

Q = 4389 j

Step-by-step explanation:

Given data:

Initial temperature = 30°C

Final temperature = -5.0 °C

Mass of water = 32.6 g

Energy in system = ?

Solution:

Formula:

Q = m.c. ΔT

Q = amount of heat absorbed or released

m = mass of given substance

c = specific heat capacity of substance

ΔT = change in temperature

Q = m.c. ΔT

ΔT = T2 - T1

ΔT =-5°C - 30°C

ΔT = 35°C

Q = m.c. ΔT

Q = 30.0 g. 4.18 j/g.°C . 35°C

Q = 4389 j

User Vitaliy Moskalyuk
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