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7. Complete the following table:


Element Moles Mass Num

7. Complete the following table:


Element Moles Mass Number of molecules


13. It is the component that is in a solution, in smaller quantity.


a. Solution


b. Solvent


c. Solvent


d. Soluto


14. It is the component that is in a solution in greater quantity.


a. Solution


b. Solvent


c. Solvent


d. The answers b and c are correct.


15. The quantitative expression of the dissolved amount of solute in a quantity determined solvent is known as:


a. Solution


b. Volume


c. Concentration


d. Stoichiometry


16.Express the moles of solute among the liters of solution


a. Molality


b. Molarity


c. % weight by volume


d. % weight by weight


17.Express the moles of solute between kg of solvent


a. Molarity


b. ppm


c. ppt


d. Molality


18. What is the molarity of a solution prepared by dissolving 7.50 g of nitrate of magnesium, Mg (NO3) 2 in enough water to prepare 25.0 mL of solution?


a. 10.3 M


b. 5.6 M


c. 6.5 M


d. 2.03 M


19. How many grams of sodium chloride, NaCl are needed to prepare 125 mL of 0.037 M NaCl solution


a. 1.021 M


b. 0.268 M


c. 0.201 M


d. 0.500 M


20. Calculate the molality of a solution containing 12.5 g of ethylene glycol (C2H6O2) dissolved in 135 g of water.


21. A solution of ethylene glycol contains 21.2 g of ethylene glycol (C2H6O2) in 85.4 mL of water. Calculate the freezing point and the boiling point of the solution. (Assume the water density is 1.00 g / mL)


22. At what volume should you dilute 75 mL of a 10.0 M solution of H2SO4 to obtain a 1.75 M solution of H2SO4.


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Casey Durgan
Casey DurganLv2
10 Apr 2019

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