20. Heat and Temperature

Specific Heat & Temperature Changes

Heat Capacity, Specific Heat, and Calorimetry

9.1 - Specific Heat and Phase Changes

<p>You are given a sample of an unknown metal. You weigh the sample and find that its weight is 29.4N. You add 1.25×10<sup>4</sup> J of heat energy to the sample and find that its temperature increases from 52°C to 70°C. What is the specific heat of this unknown metal?</p>

How to calculate temperature changes with specific heat capcity - Real Chemistry

Calorimetry Examples: How to Find Heat and Specific Heat Capacity

 <math display="inline"><mrow><mn>11.5</mn><mo rspace="thickmathspace">&#x2062;</mo><mi mathvariant="normal" class="MathML-Unit">kJ</mi></mrow></math> of heat energy are added to a <math display="inline"><mrow><mn>250</mn><mo rspace="thickmathspace">&#x2062;</mo><mi mathvariant="normal" class="MathML-Unit">g</mi></mrow></math> block of copper that is initially at <math display="inline"><mrow><mn>20</mn><mo>&#x00B0;</mo><mi mathvariant="normal" class="MathML-Unit">C</mi></mrow></math>. What is the final temperature of the copper? The specific heat capacity of copper is <math display="inline"><mrow><mn>385</mn><mo rspace="thickmathspace">&#x2062;</mo><mi mathvariant="normal" class="MathML-Unit">J</mi><mo>/</mo><mi mathvariant="normal" class="MathML-Unit">kg</mi><mo rspace="thickmathspace">&#x2062;</mo><mi mathvariant="normal" class="MathML-Unit">K</mi></mrow></math>. 

In very cold weather a significant mechanism for heat loss by the human body is energy expended in warming the air taken into the lungs with each breath. (a) On a cold winter day when the temperature is -20°C, what amount of heat is needed to warm to body temperature (37°C) the 0.50 L of air exchanged with each breath? Assume that the specific heat of air is 1020 J/kg K and that 1.0 L of air has mass 1.3 * 10^-3 kg. 

Specific Heat, Heat, and Temperature | q=mcΔT

How to calculation specific heat, heat, mass, or temperature change using Q=mCdeltaT

12.7 Heat and Temperature Change: Specific Heat Capacity

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