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How much heat do you need to raise the temperature of 100 g of aluminum from 30°C to 150°C?

How much heat do you need to raise the temperature of 100 g of aluminum from 30 C to 150 C? class=

Verified Answer :

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Heat energy can be calculated by using the
specific heat of a substance multiplying it to the mass of the sample and the
change in temperature. It is expressed as:

 Energy = mCΔT

Energy = 100 (0.90) (150 -  30)

Energy = 10800 J

Answer: The heat required by aluminium will be 10800 J

Explanation:

To calculate the amount of heat absorbed or released, we use the equation:

\(q=mc\Delta T\)

where,

q = amount of heat absorbed or released = ? J

m = mass of the substance = 100 g

c = specific heat of aluminium = 0.90 J/ g°C

\(\Delta T\) = change in temperature = \([150-30]^oC=120^oC\)

Putting values in above equation, we get:

\(q=100g\times 0.90J/g^oC\times 120^oC\\\\q=10800J\)

Hence, the heat required by aluminium will be 10800 J

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