Homework Help: Chemistry 3A

Posted by Gurjot on Monday, December 10, 2012 at 10:07pm.

C2H2(g)+ 5/2o2(g)-> 2Co2(g)+ H2o(g)+ 1255.8KJ
how many grams of C2H2 are reacted when 310 KJ of heat are released?

I left the oxygen (O) lowercase in the equation so it does not get mixed up with zero.

Chemistry 3A - DrBob222, Tuesday, December 11, 2012 at 12:20am
USUALLY we don't mix and o with an O. Placing a space, as in 5/2 O2 takes care of that possible mix up.
26 g C2H2 releases 1256.8 kJ.
26 g x (310 kJ/1255.8 kJ = ? g C2H2.

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