Final answer:
To calculate the energy of combustion per gram of vanillin, additional information such as the specific heat capacity of the calorimeter is needed,
Step-by-step explanation:
To find the energy of combustion per gram of vanillin, which is C₈H₈O₃, it is necessary to use the information given about the temperature change in the calorimeter and the mass of the vanillin burned. We are not provided with a specific heat capacity for the calorimeter in this question;
however, if we assume it had a heat capacity similar to those in the provided examples, the overall methodology would involve using the formula q = mcΔT, where q is the heat absorbed or released, m is the mass, c is the specific heat capacity, and ΔT is the change in temperature.
In your question, however, crucial information like the calorimeter's specific heat capacity is missing, which means we cannot calculate the exact value for the combustion of vanillin. Generally, to find the energy per gram, the total energy released (q) is divided by the mass of vanillin burned.
Given that your question seems to be missing specific heat capacities, a teacher or a textbook would need to provide additional information to complete the calculations. Once that information is available, you can determine the heat of combustion per gram by dividing the total energy by the mass of vanillin.