Calculations problems in AC chapter 1-4
Quiz
•
Chemistry, Mathematics
•
12th Grade
•
Practice Problem
•
Hard
Jason Toh
Used 1+ times
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9 questions
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1.
FILL IN THE BLANK QUESTION
10 mins • 1 pt
What is the molarity of Na+ if 0.5 moles of Na2CO3 when it is dissolved in 500 ml of water. (Write your answer without the unit given that the unit is in moldm-3)
2.
FILL IN THE BLANK QUESTION
10 mins • 1 pt
What is the molarity of K2CO3 if 0.5 moles of K2CO3 when it is dissolved in 500 ml of water. (Write your answer without the unit given that the unit is in moldm-3)
3.
FILL IN THE BLANK QUESTION
10 mins • 1 pt
What is the molarity of C6H12O6 if 0.5 moles of C6H12O6 when it is dissolved in 250 ml of water. (Write your answer without the unit given that the unit is in moldm-3)
4.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
What is the mass of sodium ions in 50g of bottled water that contains 67 ppb of NaCl? (Write your answer without the unit given that the unit is in g)
3.35x10-6
3.35x106
1.34x109
7.46x10-10
5.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
What is the mass of chlorine ions in 50g of bottled water that contains 67 ppb of CaCl2? (Write your answer without the unit given that the unit is in g)
3.35x10-6
3.35x106
1.34x109
7.46x10-10
6.7x10-6
6.
FILL IN THE BLANK QUESTION
10 mins • 1 pt
What is the standard deviation of the following numbers to the nearest 3 sig fig.
0.5, 0.6, 0.9, 0.4
7.
FILL IN THE BLANK QUESTION
10 mins • 1 pt
What is the pH of a solution of ethanoic acid that is in equilibrium containing 1 moldm-3 of ethanoic acid, 0.5 moldm-3 of sodium ethanoate and a Ka value of 1.8 x10-5 moldm-3. Give your answer to the nearest 4sig fig.
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