What is the heat of reaction (ΔH) of the following? C(s) + O2(g) --> CO2(g)

options

+566
-393.5
+393.5
-566

the correct answer is option d

explanation:

i was wrong its d because they dont use cm when calculating square roots

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periodic trends is an atom that gets larger as the number of electronic shells increase, the radius of atoms increases as you go down a certain group in the periodic table of elements. in general, the size of an atom will decrease as you move from left to right of a certain period.