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Laabri

Copy of 2.) Calculating Heat 1 (5/28/2026)

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Last updated about 1 month ago
17 Nsɛmmisa
Hyɛ no nsow a efi ɔkyerɛwfo no hɔ:

Take notes over the information presented on these slides.

We will do practice questions using this information.

Take notes over the information presented on these slides.

We will do practice questions using this information.

1
Asemmisa {{asɛmmisaAhyɛnsode}}
1.

What are the units for heat?

1
Asemmisa {{asɛmmisaAhyɛnsode}}
2.

If you multiply the variables together in the equation, what is the heat (don't forget the units)?

1
1
1
1
1
1
1
1
1
0
0
0
0
0
0
Asemmisa {{asɛmmisaAhyɛnsode}}
3a.

Calculate the heat required to raise the temperature of 500 grams of water from 20°C to 60°C if the specific heat of liquid water is 4.18 J/g°C.

*Don't forget the units for heat

mass = g

specific heat = J/g°C

change of temp = °C

Q (heat) =

Asemmisa {{asɛmmisaAhyɛnsode}}
3b.

How much heat is released when 200 grams of water cools from 90°C to 30°C?
Specific heat of liquid water = 4.18 J/g°C.

*Don't forget the units for heat

mass = g

specific heat = J/g°C

change of temp = °C

Q (heat) =

Asemmisa {{asɛmmisaAhyɛnsode}}
3c.

Calculate the heat required to melt 150 grams of ice at 0°C into water at 1°C.
Specific heat of ice = 2.09 J/g°C

*Don't forget the units for heat

mass = g

specific heat = J/g°C

change of temp = °C

Q (heat) =

Asemmisa {{asɛmmisaAhyɛnsode}}
3d.

A 200-gram piece of iron cools down from 100°C to 40°C. How much heat does it lose (this will be a negative value)?


Specific heat of iron = 0.449 J/g°C.

*Don't forget the units for heat

mass = g

specific heat = J/g°C

change of temp = °C

Q (heat) =

Asemmisa {{asɛmmisaAhyɛnsode}}
3e.

How much heat is released when 100 grams of steam at 110°C condenses to water at 100°C? Specific heat of steam is 2.01 J/g°C.

*Don't forget the units for heat

mass = g

specific heat = J/g°C

change of temp = °C

Q (heat) =

Asemmisa {{asɛmmisaAhyɛnsode}}
3f.

Calculate the heat lost by a 100-gram piece of aluminum as it cools from 75°C to 25°C.
Specific heat of aluminum = 0.897 J/g°C.

*Don't forget the units for heat

mass = g

specific heat = J/g°C

change of temp = °C

Q (heat) =

Asemmisa {{asɛmmisaAhyɛnsode}}
3g.

Calculate the heat absorbed by 500 grams of olive oil when its temperature increases from 20°C to 60°C.
Specific heat of olive oil = 1.97 J/g°C

*Don't forget the units for heat

mass = g

specific heat = J/g°C

change of temp = °C

Q (heat) =

Asemmisa {{asɛmmisaAhyɛnsode}}
3h.

Calculate the heat needed to raise the temperature of 150 grams of copper from 25°C to 85°C. Specific heat of copper = 0.385 J/g°C.

*Don't forget the units for heat

mass = g

specific heat = J/g°C

change of temp = °C

Q (heat) =

Asemmisa {{asɛmmisaAhyɛnsode}}
3i.

Calculate the heat released by a 200-gram piece of gold as it cools from 100°C to 50°C.
Specific heat of gold = 0.129 J/g°C.

*Don't forget the units for heat

mass = g

specific heat = J/g°C

change of temp = °C

Q (heat) =

Traffic stop signsDo not look both directions and then proceed - do not go past this point.

I will not grade anything after this point.

Stop here.

Asemmisa {{asɛmmisaAhyɛnsode}}
3j.

Calculate the heat required to raise the temperature of 250 grams of water from 15°C to 55°C if the specific heat of liquid water is 4.18 J/g°C.

*Don't forget the units for heat

mass = g

specific heat = J/g°C

change of temp = °C

Q (heat) =

Asemmisa {{asɛmmisaAhyɛnsode}}
3k.

Calculate the heat needed to raise the temperature of 100 grams of ice from -10°C to 0°C. Specific heat of ice = 2.09 J/g°C.

*Don't forget the units for heat

mass = g

specific heat = J/g°C

change of temp = °C

Q (heat) =

Asemmisa {{asɛmmisaAhyɛnsode}}
3l.

Calculate the heat lost by a 300-gram piece of lead as it cools from 150°C to 80°C.
Specific heat of lead = 0.128 J/g°C.

*Don't forget the units for heat

mass = g

specific heat = J/g°C

change of temp = °C

Q (heat) =

Asemmisa {{asɛmmisaAhyɛnsode}}
3m.

Calculate the heat lost by 150 grams of ethanol as it cools from 60°C to 20°C.
Specific heat of ethanol = 2.44 J/g°C.

*Don't forget the units for heat

mass = g

specific heat = J/g°C

change of temp = °C

Q (heat) =

Asemmisa {{asɛmmisaAhyɛnsode}}
3n.

Calculate the heat required to raise the temperature of 250 grams of a solid from 30°C to 70°C. Specific heat = 1.5 J/g°C.

*Don't forget the units for heat

mass = g

specific heat = J/g°C

change of temp = °C

Q (heat) =

Asemmisa {{asɛmmisaAhyɛnsode}}
3o.

Calculate the heat absorbed by 1000 grams of air when its temperature rises from 10°C to 50°C. Specific heat of air = 1.00 J/g°C.

*Don't forget the units for heat

mass = g

specific heat = J/g°C

change of temp = °C

Q (heat) =