If the heat of combustion for a specific compound is -1310.0 kJ/mol and its molar mass is 75.45 g/mol, how many grams of this compound must you burn to release 708.60 kJ of heat?
1310 kJ/mol x ?mol = 708.60 kJ.
Solve for ?mol.
Then mol = grams/molar mass. You know mol and molar mass, solve for grams.
Im not getting the correct thing
Which doesn't help me find the problem. Post your work so I can see what you've done.
To find the number of grams of the compound needed to release a specific amount of heat, we can use the molar mass and the heat of combustion.
First, we need to calculate the number of moles of the compound required to release 708.60 kJ of heat. We can use the equation:
moles of compound = heat released / heat of combustion
moles of compound = 708.60 kJ / -1310.0 kJ/mol [Note: The negative sign indicates the release of heat]
Next, we can convert the moles of the compound into grams using the molar mass:
grams of compound = moles of compound * molar mass
grams of compound = (708.60 kJ / -1310.0 kJ/mol) * 75.45 g/mol
Calculating this expression will give us the grams of the compound required to release 708.60 kJ of heat.