# The specific heat of wood is 2.03 J/g C. How much heat is needed to raise the temperature of 550 g of wood from -15.0 C to 10.0 C?

##### 1 Answer

You'd need **+28 kJ** of heat.

The equation that establishes a relationship between supplied heat and increase in temperature looks like this

*final* temperature and the *initial* temperature.

A substance's specific heat tells you how much heat is needed to raise the temperature of **1 gram** by **2.03 J** to raise the temperature of **1 g** of wood by

SInce you have more than 1 gram of wood and the temperature change is larger than 1 degree Celsius, you'll of course require a significant amount of heat.

Plug your values into the equation and solve for

Rounded to two sig figs, the number of sig figs you gave for the mass of the sample, and expressed in kilojoules, the answer will be

**SIDE NOTE** *The + sign mens that heat is supplied to the sample.*