Question

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

Answer 1

Answer: The heat required by aluminium will be 10800 J

Step-by-step 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* 0.90J/g^oC* 120^oC\\\\q=10800J`

Hence, the heat required by aluminium will be 10800 J

Answer 2

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