30. A solution is unsaturated i A. The solid is polar and the liquid is not B. T

Question

30. A solution is unsaturated i A. The solid is polar and the liquid is not B. The solid and liquid are polar C. The solid and liquid are non polar D. More solute can be dissolved 81-if the molarity of a KCl solution is 2.000 M. How many grams of the solute are dissolved in 1.000 L of solution? A. 149.28 B.222.2 C. 4.000g D. 2.000 g 32-492 grams of calcium nitrate (Ca(NO,h) are dissolved in water to obtain 9.0 liters of solution. The molarity of the resulting solution is A. 6.0M B. 0.33 M C o.50 M D.0.20M 33- The number of valence electrons for Al are A. 3 B. 27 C. 24 D. 8

Explanation / Answer

30. Saturated solution is one in which no more solute can be dissolved.

So, a solution is unsaturated if , more solute can be dissolved .

Option D

31. Molarity = moles of solute/volume in L

Moles of KCl = 2M*1L = 2moles

Molar mass of KCl = 74.55g/mol

Moles = mass/molar mass

Mass of KCl = moles* molar mass

= 2moles*74.66g/mol = 149.2g (option A)

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