# Molar Specific Heat

1. Nov 20, 2009

### G-reg

1. The problem statement, all variables and given/known data
A certain substance has a mass per mole of 55 g/mol. When 284 J is added as heat to a 32.0 g sample of this material, its temperature rises from 22.0°C to 39.5°C

And I know that the specific heat of this substance is 507.14 J/[kg(K)]

2. Relevant equations

Q = mc$$\Delta$$T

3. The attempt at a solution

55 g/mol * (1/32g) = 1.71875mol

284J/[(1.71875mol)/(39.5-22)] = 9.44 J/[mol(K)]

however..this is wrong and now I'm not sure where to go..help pleeeease!

2. Nov 21, 2009

### rock.freak667

I assume you used the information to find that.

$$c= 507.14 \frac{J}{kgK}$$

for the substance, 1 mol has how much mass in kg?