Problem: The specific heat of octane, C8H18 (l), is 2.22 J/g K.How many J of heat are needed to raise the temperature of 82.0 g of octane from 11.2 oC to 25.2 oC?

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FREE Expert Solution

The amount of heat Q is given by:

Q=mcT


where m = mass (in grams), c = specific heat, ΔT = change in temperature = final T – initial T. We’re given the following values:

m = 82 g

c = 2.22 J/g • ˚C

ΔT = 25.2 ˚C – 11.2 ˚C = 14 ˚C

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Problem Details

The specific heat of octane, C8H18 (l), is 2.22 J/g K.

How many J of heat are needed to raise the temperature of 82.0 g of octane from 11.2 oC to 25.2 oC?

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What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Calorimetry concept. You can view video lessons to learn Calorimetry. Or if you need more Calorimetry practice, you can also practice Calorimetry practice problems.

What professor is this problem relevant for?

Based on our data, we think this problem is relevant for Professor Brown's class at TAMU.