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poizon [28]
4 years ago
5

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Chemistry
1 answer:
Igoryamba4 years ago
8 0
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Concept Review<br> 14.11. Can a reaction that is not reversible achieve chemical equilibrium?
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No

Explanation:

Chemical equilibrium is reached by the forward reaction rate equaling the reverse reaction rate. If the reaction is not reversible, this could not occur.

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Why can two igneous rocks that have the same minerals but different names?
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Write a balanced chemical equation for the reaction that occurs when heptane, C7H16(l) , burns in air.
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Start with Unbalanced Equation and balance it, so...
C7H16+O2--->CO2+H2O
There are 7 C atoms on the left-hand side, so we need 7 C atoms on the right-hand side. Add a 7 in front of the CO2...7CO2+H2O on right side now.
We have fixed 16 H atoms on the left-hand side, so we need 16 H atoms on the right-hand side. Add an 8 in front of H2O to make 16 (8x2)...7CO2+8H2O on right side now.
There are 22 O atoms on the right-hand side: 14 from the CO2 and 8 from the H2O. Add an 11 in front of the O2 on the left side to make 22 (11x2).
Every formula now has a fixed coefficient. You should have a balanced equation of...
C7H16+11O2--->7CO2+8H2O
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