Calculate the amount of heat (in calories) released when the 1.2 g sample was burned.
To calculate the amount of heat released when a sample is burned, you need to know the heat of combustion for the substance.
Is there a specific substance or compound you would like to calculate this for?
To calculate the amount of heat released when a sample is burned, we need to use the concept of calorimetry. Calorimetry is the scientific method used to measure the transfer of heat during chemical reactions or physical changes.
To determine the amount of heat released during the combustion of a sample, we need the enthalpy of combustion for the substance being burned. The enthalpy of combustion is the change in enthalpy when one mole of a substance undergoes complete combustion with oxygen.
Since you have not mentioned the specific substance being burned, I can't provide you with the enthalpy of combustion for that substance. However, I can explain the general process for calculating the heat released during combustion.
Here's how you can calculate it:
1. Determine the enthalpy of combustion: Find the enthalpy of combustion for the substance you are burning. This value is usually given in units of "heat per mole" (kJ/mol) or "heat per gram" (kJ/g).
2. Convert the given mass into moles: Use the molar mass of the substance to convert the given mass (in grams) into moles. The molar mass is the mass of one mole of the substance, expressed in grams/mole.
3. Calculate the heat released: Multiply the moles of the substance by the enthalpy of combustion (in kJ/mol or kJ/g). This will give you the amount of heat released in kilojoules (kJ).
4. Convert to calories: To convert the result into calories, multiply the obtained value by 4.184. This will give you the amount of heat released in calories.
Please note that each substance has its own specific enthalpy of combustion, so you would need the information regarding the substance being burned to accurately calculate the heat released during its combustion.