What is the initial concentration of the stock solution in the example discussed?

Dilution and Concentration Techniques

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Chemistry
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9th - 10th Grade
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Hard

Patricia Brown
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
2 M
5 M
0.2 M
20 M
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the final concentration of the diluted solution we aim to achieve?
20 M
0.2 M
2 M
5 M
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which formula is used to calculate the volume of stock solution needed for dilution?
Initial molarity x Initial volume = Final molarity x Final volume
Initial volume / Final volume = Initial molarity / Final molarity
Initial molarity + Final molarity = Initial volume + Final volume
Initial volume - Final volume = Initial molarity - Final molarity
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How much stock solution is required to make the 50 mL diluted solution?
20 mL
2 mL
5 mL
10 mL
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does 'TD' stand for on the volumetric pipet?
To Dilute
To Determine
To Dispense
To Deliver
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the accuracy of the 5 mL volumetric pipet at 20°C?
±0.01 mL
±0.05 mL
±0.1 mL
±0.5 mL
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the purpose of inverting the volumetric flask during the dilution process?
To cool the solution
To ensure thorough mixing
To remove air bubbles
To calibrate the flask
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