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timurjin [86]
3 years ago
11

How is enthalpy used to predict whether a reaction is endothermic or exothermic?

Chemistry
1 answer:
Dahasolnce [82]3 years ago
8 0
If the enthalpy change is negative, then the reaction is exothermic because heat energy was lost to the surroundings.

If the enthalpy change was positive, then the reaction was endothermic because heat energy was gained from the surroundings!

Hope this helps!! x
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Please someone explain this too me​
Brums [2.3K]
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3 0
3 years ago
C2h4 3 o2 2 co2 2 h2o
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Use the question marck Moles of CO2
The the giving = 0.624 mol O2
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SET UP THE CHART
Always start with the giving

0.624 mol O2    /  1mol of CO2
___________  / _____________ = Cancel the queal ( O2)
                       / 32.00c O2
                      /
                     /
Multiply the top and divide by the bottom 
0.624 mol CO x 1mol CO2 = 0.624 divide by 32.00 O2 =0.0195
You should look at the giving number ( how many num u gor ever there) 
Ur answer should have the same # as ur givin so 
= 0.0195 
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3 0
3 years ago
What parts of a divers body are most affected by pressure changes?
Yanka [14]
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hope i helped
5 0
3 years ago
5. The chart lists organisms in five different categories living near the Texas
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Answer:

A

Explanation:

3 0
2 years ago
Read 2 more answers
PLS HELP what is 2x10^3 in long form
saul85 [17]

Answer:

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Explanation:

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6 0
3 years ago
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