A solution is prepared by dissolving 75.87 grams of NaCl in enough water make 25

Question

A solution is prepared by dissolving 75.87 grams of NaCl in enough water make 2525 mL of solution. What is the molarity of the solution? can only occur between polar molecules occurs between all molecules strength depends on extent of molecular polarity requires the presence of H bonded to a small but highly EN atom electrostatic forces between molecules an extra strong type of dipole-dipole interaction liquid water would not be present on this planet without it the result of momentary displacements of electron density A stock solution is 2.567 M in NaBr. A dilution is made by diluting 45.00 mLs of the stock solution to a new volume of 1.500 liters. How many grams of NaBr are present in the diluted solution? What is the difference between osmosis and osmotic like processes? A nurse needs to prepare 150.0 mL of normal saline to dissolve drugs that are to be administered IV. Normal saline is 0.92% (m/v) NaCl. How many grams of NaCl will the nurse need? What is the %(m

Explanation / Answer

I am answering from question 47 to 55. please post other parts as different question.

47.

75.87 gm of NaCl in 2525 ml of water.

calculating number of moles:

molar mass of NaCl= 58.44 g

no. of moles= 75.87/55.84 = 1.385

1 L contains 1.385 moles then molarity is 1.385

molarity in 2.525 L = 1.385/2.525 = 0.538 M

48.

DIP2

49.

VW

50.

DIP2

51.

HB

52.

VW

53.

HB

54.

HB

55.

VW

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