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August 20, 2014

Homework Help: Chemistry and Science

Posted by Rose Bud on Friday, February 17, 2012 at 1:05am.

carbon dioxide is a "greenhouse" gas in that it absorbs energy from the sun, causing heating of the atmosphere and eventually global warming. carbon dioxide is produced from the combustion of carbon-containing fuels such as coal (mainly carbon), natural gas (mainly CH4), and petroleum (assume to be C8H18). Given the information in the following table, calculate which fuel contributes the least to global warming by calculating the energy obtained per gram of carbon dioxide produced.

Given

Coal - Carbon = 32kJ/g
Natural gas - CH4 = 49kJ/g
Petroleum - C8H18 = 48kJ/g

I am not sure where to start, with an equation?
or convert 1 g of C to moles and then find the kJ/mol?

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