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PIT_PIT [208]
3 years ago
10

identify 2 changes of state that require energy to be used, and 2 changes of state that require the release of energy

Chemistry
1 answer:
solniwko [45]3 years ago
8 0

Answer:

used=Evaporation and sublimation

released=condensation and freezing

Explanation:

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A solution has a [OH-] of 1 × 10-9. What is the pOH of this solution?
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LUCKY_DIMON [66]
In dilute solutions, the unit osmolarity is being used. It usually has units milliosmols per liter of solution or mOsmol/L. An osmole defines the number of moles of the solute that would have an effect on the osmotic pressure of the solution. Osmolarity is calculated by the product of the molarity and the number of particles in the solution which is 2 for potassium chloride. We calculate as follows:
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