Using table 1

PHYSICS · Single correct · AP · Physics 2: Algebra-based · Thermodynamics · Thermodynamics

Problem

Using table 1, state which of the following statements is correct.

Substance	Specific heat capacity / $\text{kJ kg}^{-1} \text{K}^{-1}$
water	4.18
ethanol	2.44
copper	0.385

(1) More heat is needed to increase the temperature of 50 g of water by

50^\circ\text{C}

than 50 g of ethanol by

50^\circ\text{C}

. (2) If the same heat is supplied to equal masses of ethanol and water, the temperature of the water will increase more. (3) If equal masses of water at

20^\circ\text{C}

and ethanol at

50^\circ\text{C}

are mixed together, the final temperature will be

35^\circ\text{C}

. (4) If equal masses of water and ethanol at

50^\circ\text{C}

cool down to room temperature, ethanol gives out more heat.

Related theory

Specific Heat Capacity
Heat Capacity
Calorimetry and latent heat
Thermal Properties of Matter
Thermodynamics

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