A burning enhance and also a bonfire may have actually the exact same temperature, yet you would not sit approximately a burning enhance on a autumn evening to stay warmth. Why not?


The temperature of 1 gram of burning wood is about the exact same for both a match and also a bonfire. This is an intensive property and counts on the material (wood). However, the overall amount of created warm relies on the amount of material; this is a comprehensive home. The amount of lumber in a bonfire is much greater than that in a match; the full amount of created warm is also a lot better, which is why we can sit around a bonfire to stay heat, however a match would not carry out enough warmth to save us from obtaining cold.

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PROBLEM (PageIndex2)

Exordinary the difference between warm capacity and specific heat of a substance.


Heat capacity refers to the heat forced to raise the temperature of the mass of the substance 1 degree; specific warm describes the warmth compelled to raise the temperature of 1 gram of the substance 1 level. Hence, heat capacity is a substantial residential or commercial property, and also certain warmth is an extensive one.

PROBLEM (PageIndex3)

How much heat, in joules and in calories, need to be added to a 75.0–g iron block via a particular heat of 0.449 J/g °C to rise its temperature from 25 °C to its melting temperature of 1535 °C?


50,800 J

12,200 cal

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PROBLEM (PageIndex4)

How much warm, in joules and also in calories, is forced to warmth a 28.4-g (1-oz) ice cube from −23.0 °C to −1.0 °C?


1310 J

313 cal

PROBLEM (PageIndex5)

How much would certainly the temperature of 275 g of water increase if 36.5 kJ of heat were added?


31.7° C

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PROBLEM (PageIndex6)

If 14.5 kJ of heat were added to 485 g of liquid water, just how a lot would certainly its temperature increase?


7.15 °C

PROBLEM (PageIndex7)

A item of unrecognized substance weighs 44.7 g and also calls for 2110 J to increase its temperature from 23.2 °C to 89.6 °C.

What is the specific heat of the substance? Answer a


Answer b


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PROBLEM (PageIndex8)

A piece of unwell-known solid substance weighs 437.2 g, and also calls for 8460 J to boost its temperature from 19.3 °C to 68.9 °C.

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What is the specific heat of the substance? Answer a


Answer b


PROBLEM (PageIndex9)

An aluminum kettle weighs 1.05 kg.

How a lot heat is required to rise the temperature of this kettle from 23.0 °C to 99.0 °C? How much heat (in kJ) is required to heat this kettle from 23.0 °C to 99.0 °C if it consists of 1.25 L of water (thickness of 0.997 g/mL and a specific warmth of 4.184 J/g °C)? Answer a


Answer b

71580 J

Answer c

467.86 kJ

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