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Aleksandr-060686 [28]
3 years ago
10

What is the difference between a molecule and a compound?!

Chemistry
2 answers:
Annette [7]3 years ago
8 0
A molecule is when two or more atoms combine together and a compound is at least two different elements.
KiRa [710]3 years ago
3 0

molecules can be made of two of the same elements whereas a compound is always made of two different elements

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Which statement is a valid conclusion about the activation energy of the reverse reaction if the forward reaction is exothermic?
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Answer:

e) The activation energy of the reverse reaction is greater than that of the forward reaction.

Explanation:

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  • An exothermic reaction is a reaction that releases heat energy to the surrounding while an endothermic reactions is a reaction that absorbs heat from the surrounding.
  • <em><u>In reversible reactions, when the forward reaction is exothermic it means the reverse reaction will be endothermic, therefore the reverse reaction will have a higher activation energy than the forward reaction.</u></em> The activation energy of the reverse reaction will be the sum of the enthalpy and the activation energy of the forward reaction.
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Which part of the Periodic Table of the elements is used to identify valence electrons? *
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2 years ago
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Explanation:

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.914  x 350 / ( 273 + 22.7 ) = 1 x 220 / T₂

1.0818 = 220 / T₂

T₂ = 203.36 K

= - 69.64 ⁰ C

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Explanation:

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