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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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A team of engineers is doing a cost-benefit analysis to determine whether
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1) The risk of high cost due to increased resource requirements

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The analysis being performed by the engineers = A cost benefit analysis to determine if a new technology should be developed

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Seawater is approximately 4.0% by mass dissolved ions, 85% of which are from NaCl. (a) Find the mass % of NaCl in seawater.
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On average, seawater in the world's oceans has a salinity of ~3.5%. This means that for every 1 litre (1000 mL) of seawater there are 35 grams of salts (mostly, but not entirely, sodium chloride) dissolved in it.

<h3>What is salinity ?</h3>

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An isohaline, or isohale sometimes, is a contour line with a constant salinity.

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To learn more about salinity from the given link:

brainly.com/question/3074395

#SPJ4

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Which statement describes steps involved in the production of hydroelectric power?
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