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nydimaria [60]
3 years ago
5

Which of these elements has the smallest atomic radius?

Chemistry
1 answer:
Elodia [21]3 years ago
5 0
Krypton. The atomic radius decreases as you go across a period.
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How will adding NaCl affect the freezing point of a solution?
lord [1]

Answer is: adding NaCl will lower the freezing point of a solution.

A solution (in this example solution of sodium chloride) freezes at a lower temperature than does the pure solvent (deionized water).

The higher the solute concentration (sodium chloride), freezing point depression of the solution will be greater.

Equation describing the change in freezing point:  

ΔT = Kf · b · i.

ΔT - temperature change from pure solvent to solution.

Kf - the molal freezing point depression constant.

b -  molality (moles of solute per kilogram of solvent).

i - Van’t Hoff Factor.

Dissociation of sodium chloride in water: NaCl(aq) →  Na⁺(aq) + Cl⁻(aq).

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Storing sugar for later use is an example of an endothermic reaction because that energy is being absorbed.

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