Concentration and Dilution
Quiz
•
Chemistry
•
9th - 12th Grade
•
Medium
Standards-aligned
FLORENT MARIE MOFO WAMBA
Used 2+ times
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22 questions
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1.
FILL IN THE BLANK QUESTION
1 min • 1 pt
What is the molarity of a 0.5L sample of a solution that contains 60.0 g of sodium hydroxide (NaOH)
2.
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1 min • 1 pt
What volume is needed to make a 2.45 M solution of KCl using 0.50 mol of KCl?
3.
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1 min • 1 pt
What is the molality of a solution made by dissolving 2 moles of NaOH in 400 grams of water?
4.
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1 min • 1 pt
What is the percent by mass of a solution made by dissolving 20.0 g of NaCl into 180.0 g of water?
Answer explanation
20g / (180g+ 20g) x 100 = 10 %
5.
FILL IN THE BLANK QUESTION
1 min • 1 pt
6.
FILL IN THE BLANK QUESTION
1 min • 1 pt
What is the mole fraction of NaOH in an aqueous solution that contains 22.8% NaOH by mass?
(1L of H2O has a mass of 1000g, 1 mol H2O = 18.02g)
7.
FILL IN THE BLANK QUESTION
1 min • 1 pt
What is the concentration of a solution in parts per million if 0.02 grams of NaCl is dissolved in 1000 grams of solution?
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