- #1

laurenM

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## Homework Statement

Given 2C

_{2}H

_{6}[itex]\rightarrow[/itex]2C

_{2}H

_{4(g)}2H

_{2(G)}[itex]\Delta H[/itex]=-64.2kJ

[itex]\Delta H[/itex] for the reaction of 6.000g of C2H6(g) to givev C2H4(g) andH2(g) is

## Homework Equations

[itex]\Delta H[/itex] = [itex]\Sigma products [/itex] - [itex]\Sigma reactants[/itex]

q=ct

keeping the units

The enthalpies are not given and are not to be looked up

## The Attempt at a Solution

I understand that i have to divide ΔH by 2 and multiply by 6g

but that gives me a unit of kJ*g so i need to divide by grams to get the units right... my solution book tells me to divide by 30g but i am unaware as to where that comes from