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liq [111]
4 years ago
12

Why is this reaction considered to be exothermic? a Because energy difference A is greater than energy difference C. b Because e

nergy difference A and energy difference C are about equal. c Because energy difference B is greater than energy difference A. d Because energy difference B is greater than energy difference C. e Because energy difference B is greater than energy difference C plus energy difference A.
Chemistry
1 answer:
Pani-rosa [81]4 years ago
4 0

Answer:

we would need a bit more info for this

Explanation:

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Answer:

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Explanation:

                    <em>Mass percent</em> of an element is the mass of that element divided by the total mass of the elements forming that compound (or molecular mass.

So,

Mass percent of Mn will be given as,

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Atomic Mass of Mn  =  54.94 g/mol

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Putting values in above formula,

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          %Mn  = 34.76 %

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