We dissolve 2.45 g of sugar in 200.0 g water. what is the mass percent of sugar in the solution?

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We dissolve 2.45 g of sugar in 200.0 g water. what is the mass percent of sugar in the solution?

1.23%

C.

2.42%

D.

123%

E.

none of the above

Question 2

 The molarity of a solution prepared by dissolving 15.0 g of NaCl in 1000 mL water is?

A.

0.150 M

B.

0.0150 M

C.

15.0 M

D.

1.50 x 102 M

E.

none of the above

10 points 

Question 3

 Given that you wish to use exactly 0.325 mole of NaCl to give a 2.50 M NaCl solution, how many milliliters of solution must you prepare?

A.

130. mL

B.

0.130 mL

C.

7.69 mL

D.

0.813 mL

E.

none of the above

Question 4

 How many grams of LiF would be present in 575 mL of 0.750 M LiF solution?

A.

11.2 g

B.

0.0338 g 1.12 × 104 g

C.

1.12 × 104 g

D.

19.9 g

E.

33.8 g

Question 5

 What volume (in mL) of a 0.500 M fructose (C6H12O6) solution can be made from 11.3 g of fructose?

A.

11.3 mL

B.

0.125 mL

C.

31.4 mL

D.

5.65 mL

E.

125 mL

Question 6

 What volume of 12.0 M HCl is required to make 75.0 mL of 3.50 M HCl?

A.

21.9 mL

B.

0.560 mL

C.

257 mL

D.

560. mL

E.

none of the above

Question 7

 If you add 4.00 mL of pure water to 6.00 mL of 0.750 M NaCl solution, what is the concentration of sodium chloride in the diluted solution?

A.

0.250 M

B.

0.450 M

C.

0.500 M

D.

1.13 M

E.

none of the above

Question 8

 Which of the following substances is NOT a solution?

A.

humid air

B.

beer

C.

oxygen

D.

steel

E.

All of the above are solutions.

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