Scientists are often interested in knowing the molar heat of combustion – the heat released during the combustion of one mole of a substance. Use the Periodic Table to find molar masses.

How many moles of ethanol are present in the sample?

- aluminum and copper chloride.

- the chloride ion to separate the aluminum from the oxygen so that the aluminum can react with the copper ions (and the water molecules).

1. they vary with a higher number because boiling is way hotter than melting

i think that the answer is c