20 points! So I got this lab report to do and I need some more info it's about lab safety got any info I can use! :) If so, Than
1 answer:
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Answer:
A
Explanation:
Recall that Δ<em>H</em> is the sum of the heats of formation of the products minus the heat of formation of the reactants multiplied by their respective coefficients. That is:
Therefore, from the chemical equation, we have that:
Remember that the heat of formation of pure elements (e.g. H₂) are zero. Substitute in known values and solve for hydrazine:
In conclusion, our answer is A.