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Molarity Molality Mole Fraction

Authored by Charles Martinez

Chemistry

11th - 12th Grade

NGSS covered

Molarity Molality Mole Fraction
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12 questions

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1.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

What is the molarity of 4 g of NaCl (MM=58.45) in 3,800 mL of solution?

0.018 M
0.0011 M
1.052 M
0.062 M

2.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

How many grams of solute are dissolved in 125.0 mL of 5.00 M NaCl (MM = 58.45)?

0.625 g NaCl
625 g NaCl
36.5 g NaCl
0.04 mol NaCl

3.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Find the molarity of 186.55 g of sucrose, C12H22O11 (MM = 342) in 250 mL of water.

2.18 M
0.746 M
1.18 M
0.545 M

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What volume of a 0.88 M solution can be made using 130. grams of FeCl2

3.9 L
2.8 L
0.75 L
1.2 L

5.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

100 grams of sucrose, C12H22O11, is dissolved in 1500 g of water.  What is the molality?

5.17 m C12H22O11
2.51 m C12H22O11
0.19 m C12H22O11
0.88 m C12H22O11

6.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

A 0.556 g sample of an unknown compound is dissolved in 45.31 g of water.  Find the molar mass of the unknown compound if the molality of the solution if found to be 0.35 m.

0.072 g/mole
34.75 g/mole
0.029 g/mole
56.11 g/mole

7.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

If I make s solution by adding water to 27.72 g of methanol (CH3OH) until the final volume of the solution is 275 mL, what is the molarity of methanol in this solution?

5.66 M CH3OH
3.13 M CH3OH
0.77 M CH3OH
2.19 M CH3OH

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