When 300. cal of energy is lost from a 125 g object, the temperature decreases from 45.0°C to 40.0°C. What is the specific heat of this object in Cal/g 'C?

Question

Zayden Short

Chemistry

10 May, 20:15

When 300. cal of energy is lost from a 125 g object, the temperature decreases from 45.0°C to 40.0°C. What is the specific heat of this object in Cal/g 'C?

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Answers (1)

Know the Answer?

Lindsay Chambers · Answer 1

The answer to your question is C = 0.48 cal/g°C

Explanation:

Data

Heat = Q = 300 cal

mass = m = 125 g

temperature 1 = T1 = 45°C

temperature 2 = T2 = 40°C

Specific heat = C = ? cal/g°C

Formula

H = mC (T2 - T1)

-Solve for Specific heat (C)

C = H / m (T2 - T1)

-Substitution

C = 300 / 125 (40 - 45)

-Simplification

C = - 300 / 125 (-5)

C = - 300 / - 625

-Result

C = 0.48 cal/g°C