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April 18, 2014

Homework Help: Chemistry

Posted by Anonymous on Monday, April 21, 2008 at 12:12pm.

Methanol burns in oxygen to make carbon dioxide and water. The equation is exothermic, with 1452kJ/mol. of energy being released.

(a)Write a balanced equation for the combustion of methanol.
-methanol+oxygen=carbon dioxide+water
-CH3OH+O2=CO2+H2O
(how do you balance it?)

?(b)State how much energy (in kJ) us released when 1 mole of methanol is burned.

?(c)Calculate the amount of heat energy released on burning 4 moles of methanol.

(d)What is the molar mass of methanol?(=32) Use the value to calculate the energy release when 4g of methanol is burned. (use n=m/Mr ?)

(e)Calculate the mass of carbon dioxide produced when 16g of methanol is used. (use n=m/Mr ?)

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