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Elden [556K]
4 years ago
12

The total bonding energy for the products of a reaction is 2535 kJ/mol and the bonding energy of the reactants is 1375 kJ/mol. C

alculate the change in enthalpy, and classify the reaction as endothermic or exothermic.
A) -1160 kJ/mol, endothermic
B) -1160 kJ/mol, exothermic
Chemistry
1 answer:
omeli [17]4 years ago
5 0

Answer:

1160 kJ/mol

Explanation:

To get the enthalpy of the reaction take ΔH products- ΔH reactants

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Explanation:

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What is the percent composition of phosphoric acid H3PO4
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Hey there!:

Molar mass H3PO4 = <span>97.9952 g/mol

Atomic Masses :

H = </span><span>1.00794 a.m.u

</span>P = <span>30.973762 a.m.u

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H % =  [ ( 1.00794 * 3 ) / </span> 97.9952  ]  * 100

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P % = [ ( </span>30.973762 * 1 ) / 97.9952 ] * 100

P% = <span>31.6074 %

O % = [ ( </span>15.9994 * 4 ) / 97.9952 ] * 100

O% = <span>65.3069 %


Hope this helps!</span>
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Answer:

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