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ivanzaharov [21]
3 years ago
15

Temperature and kinetic energy have a relationship.

Chemistry
2 answers:
liraira [26]3 years ago
4 0

Answer:

\boxed {\boxed {\sf Temperature=Average \ kinetic \ energy}}

Explanation:

Temperature is also known as the <em>average kinetic energy </em>in a substance.

If there is an absence of heat in a substance, the particles move slower and the kinetic energy decreases. The temperature will be lower, because there is less kinetic energy.

If heat is present or applied, the particles move more, so kinetic energy increases. The temperature will be higher, since there is more kinetic energy.

So, the relationship is: temperature is the measure of average kinetic energy.

Alex17521 [72]3 years ago
4 0

Answer:

<em><u>DIRECT </u></em>

Explanation:

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Answer:

700 calories

Explanation:

Using the formula below:

Q = m × c × ∆T

Where;

Q = amount of heat required (calories)

m = mass of substance (g)

c = specific heat of substance (cal/g°C)

∆T = change in temperature (°C)

According to this question, the following information was provided;

Q = ?

m = 20g

c = 1.0 cal/g °C

∆T = 40°C - 5°C = 35°C

Using the formula; Q = m × c × ∆T

Q = 20 × 1 × 35

Q = 700 calories

Hence, 700 cal of heat energy is needed to raise 20 g of H2O from 5°C to 40°C.

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3 years ago
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