The answer from the book is-6.41 kJ. I found the mols of C2H6 and used the ratio to figure out the sum of mass of reaction and products to get to get 12.00g this gives me the answer of -16.05 kJ.
=-64.2/2 to get it to a 1 to 1 ratio
=-32.1*6 multiply by 6.00g
=-192.6/12
=-16.05 kJ
if...
Homework Statement
Given 2C2H6 \rightarrow2C2H4(g) 2H2(G) \Delta H=-64.2kJ
\Delta H for the reaction of 6.000g of C2H6(g) to givev C2H4(g) andH2(g) is
Homework Equations
\Delta H = \Sigma products - \Sigma reactants
q=ct
keeping the units
The enthalpies are not given and are not to be looked...