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Misha Larkins [42]
3 years ago
15

When you put water in freezer the temperature of the water begins to decrease. what is the cause of this temperature decrease A

the water is lose if heat Be the water is absorbing cold from a surroundings. C the water particles are increasing in speed.
D the extra pressure from the colder air causes particles to squeeze together.
Chemistry
1 answer:
pashok25 [27]3 years ago
6 0

Answer:

C, because it will then begin to become a solid but it will still be water but frozen so more like ice then.

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Vera_Pavlovna [14]

Answer:

B

Explanation:

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What is the concentration in milligrams per milliter of a solution containing 23.5 meq sodium chlorise per milliliter? mw nacl =
ValentinkaMS [17]

1374.75 is the concentration in milligrams per ml of a solution containing 23.5 meq sodium chloride per milliliter.

Concentration in chemistry is calculated by dividing a constituent's abundance by the mixture's total volume.

It is calculated in mg/ml.

The unit of measurement frequently used for electrolytes is the milliequivalent (mEq). This value compares an element's chemical activity, or combining power, to that of 1 mg of hydrogen.

Formula for calculating concentration in mg/ml is

Conc. (mg/ml) = M(eq) /ml ×  Molecular weight / Valency

Given

M(eq) NaCl/ ml = 23.5

Molecular weight pf NaCl = 58.5 g/mol

Valency = 1

Putting the values into the formula

Conc. (mg/ml) = 23.5 ×58.5/1

                       = 1374.75 mg/ml

Hence, 1374.75 is the concentration in milligrams per ml of a solution containing 23.5 meq sodium chloride per milliliter.

Learn more about Concentration here brainly.com/question/14500335

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