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Dilution Calculations and Concepts

Dilution Calculations and Concepts

Assessment

Interactive Video

Chemistry, Mathematics, Science

9th - 10th Grade

Practice Problem

Hard

Created by

Patricia Brown

FREE Resource

This video tutorial continues from the previous lesson on preparing stock concentrations. It focuses on teaching how to prepare various dilutions from a stock solution using the formula c1v1=c2v2. The video provides detailed examples of preparing 10 µg/ml and 20 µg/ml dilutions, explaining each step and calculation involved. It concludes with a discussion on how to adjust the formula for different concentrations and volumes.

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What was the main focus of the previous video mentioned in the introduction?

Spectrophotometric estimation

Preparing stock concentrations

Calorimetric estimation

Preparing dilutions

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does the variable 'c1' represent in the dilution formula?

Concentration of the stock solution

Volume of the stock solution

Concentration of the dilution

Volume of the dilution

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In the formula c1v1 = c2v2, what does 'v2' stand for?

Concentration of the dilution

Concentration of the stock solution

Volume of the dilution

Volume of the stock solution

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How much stock solution is needed to prepare a 10 microgram per ml dilution in a 1 ml final volume?

10 ml

0.1 ml

0.9 ml

1 ml

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the final concentration when 0.1 ml of stock is diluted with 0.9 ml of water?

1 microgram per ml

10 microgram per ml

100 microgram per ml

0.1 microgram per ml

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

To prepare a 20 microgram per ml dilution in a 2 ml final volume, how much stock solution is required?

0.4 ml

2 ml

0.2 ml

1.6 ml

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How much water should be added to 0.4 ml of stock to achieve a 2 ml final volume?

0.4 ml

1.6 ml

2 ml

1 ml

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