Scene 1 (0s)
UNDERSTANDING. DILUTION. I. II. III. IV.
Scene 2 (12s)
THE CONCEPT. I. II. III. IV.
Scene 3 (20s)
FORMULAS. I. II. III. IV.
Scene 4 (26s)
WORD PROBLEMS. I. II. III. IV.
Scene 5 (34s)
PRACTICE. I. THE CONCEPT. II. FORMULAS. III. WORD PROBLEMS.
Scene 6 (49s)
I. THE CONCEPT. stocK.
Scene 7 (1m 17s)
solute. Solvent. 200 400 800 600 1000. STOCK. APPROXIMATE VOLUMES.
Scene 8 (2m 2s)
STOCK.
Scene 9 (2m 17s)
[image]. STOCK. Solvent. 200 400 800 600 1000.
Scene 10 (2m 34s)
Diluted solution. 200 400 800 600 1000. STOCK. Solvent.
Scene 11 (2m 55s)
concentration. =. amount of solute. volume of solution.
Scene 12 (3m 48s)
c1. V1. I. c2. FORMULAS. V2. II. FORMULAS.
Scene 13 (4m 15s)
STOCK. [image]. c1. Solution 1. c1. V1. V2. c2. V1.
Scene 14 (7m 2s)
c1V1 = c2V2. c1. V1. =. c2. V2. c1. V1. c1. x. =.
Scene 15 (8m 5s)
c1V1 = c2V2. c1V1. =. c2V2. c1. c1. V1. c1V1 = c2V2.
Scene 16 (9m 53s)
Note: in math. If a = b, then b = a. =. c2V2. c2V2 = c1V1.
Scene 17 (11m 13s)
I. II. III. WORD PROBLEMS.
Scene 18 (11m 43s)
10 STEPS TO SOLVING WORD PROBLEMS.
Scene 19 (11m 49s)
10 STEPS TO SOLVING WORD PROBLEMS Circle all numbers and units in problem; underline the unknown. List numbers with units. Place an “=” sign to the left of each. Write the symbol for the variable to the left of the “=” sign. Determine the unknown. Write down its symbol, then “=” sign, then “?” mark. In parentheses, write the specific unit as indicated in the problem. Check units. Make necessary conversions. Write original formula. Manipulate formula by placing unknown on the left hand side of the equation. (Use triangle if necessary.) 9. Plug in numbers and units; cancel where necessary. 10. Solve. Circle final answer..
Scene 20 (12m 52s)
CONCENTRATED SOLUTION 500 500 mi 30 200 100 DILUTE SOLUTION 500 mi 100.
Scene 21 (13m 32s)
1 0 STEPS TO SOLVING WORD PROBLEMS 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. Circle all numbers and units in problem; underline the unknown. List numbers with units. Place an "=" sign to the left of each. Write the symbol for the variable to the left of the "=" sign. Determine the unknown. Write down its symbol, then "=" sign, then "?" mark. In parentheses, write the specific unit as indicated in the problem. Check units. Make necessary conversions. Write original formula. Manipulate formula by placing unknown on the left hand side of the equation. (Use triangle if necessary.) Plug in numbers and units; cancel where necessary. Solve. Circle final answer..
Scene 22 (13m 48s)
Problem 1.
Scene 23 (13m 54s)
In a clean beaker you pour 400 mL of the 50 g/L solution that you have prepared and you add enough water to make a 500-mL solution. What is the concentration of your second solution?.
Scene 24 (14m 40s)
1 0 STEPS TO SOLVING WORD PROBLEMS 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. Circle all numbers and units in problem; underline the unknown. List numbers with units. Place an sign to the left of each. Write the symbol for the variable to the left of the sign. Determine the unknown. Write down its symbol, then "=" sign, then "?" mark. In parentheses, write the specific unit as indicated in the problem. Check units. Make necessary conversions. Write original formula. Manipulate formula by placing unknown on the left hand side of the equation. (Use triangle if necessary.) Plug in numbers and units; cancel where necessary. Solve. Circle final answer..
Scene 25 (14m 48s)
= 400 mL. = 50 g/L. = 500 mL. Solution. V = 400 mL Solution.
Scene 26 (15m 40s)
= 500 mL. = ?. 1. = 400 mL. = 50 g/L. 1. 2. 2. Solution.
Scene 27 (17m 52s)
:-) … Más. YAY!!!!!.
Scene 28 (17m 57s)
Problem 2.
Scene 29 (18m 3s)
In a clean beaker you pour 400 mL of a stock solution and you add enough water to make a 500-mL solution whose concentration is 40 g/L. What is the concentration of your stock solution?.
Scene 30 (20m 15s)
c1V1. c2V2. =. c2 V2. =. c1 x V1. c2. V2. c1. x. V1.
Scene 31 (21m 57s)
Problem 3.
Scene 32 (22m 3s)
You want to prepare 500 mL of a 40 g/L solution from a 50 g/L stock solution. What volume of the stock solution would you need to use?.
Scene 33 (24m 0s)
c1V1. c2V2. =. c2 V2. =. c1 x V1. c2. V2. c1. x. V1.
Scene 34 (24m 52s)
1 V. You want to prepare 500 mL of a 40 g/L solution from a 50 g/L stock solution. What volume of the stock solution would you need to use?.
Scene 35 (25m 19s)
Water. Solution 2.
Scene 36 (25m 25s)
Solution. Diluted solution. c1V1 = c2V2. V2. [image] Solution I.
Scene 37 (27m 7s)
c1 V1 = c2 V2. V2 = V1 + Vw. c1 V1 = c2 x (V1 + Vw).
Scene 38 (28m 31s)
c1 V1 = c2 x (V1 + Vw). c1V1. c2. x. ( V1 + Vw). V1.
Scene 39 (30m 3s)
Problem 4.
Scene 40 (30m 9s)
How much water do you need to add to 400 mL of a 50 g/L solution to make a solution whose concentration is 40 g/L ?.
Scene 41 (31m 47s)
c1V1. =. How much water do you need to add to 400 mL of a 50 g/L solution to make a solution whose concentration is 40 g/L ?.
Scene 42 (32m 38s)
How much water do you need to add to 400 mL of a 50 g/L solution to make a solution whose concentration is 40 g/L ?.
Scene 43 (33m 28s)
Problem 5.
Scene 44 (33m 34s)
You add 100 mL of water to 400 mL of a solution whose concentration is 50 g/L. What is the concentration of your final solution?.
Scene 45 (35m 26s)
c1V1. =. You add 100 mL of water to 400 mL of a solution whose concentration is 50 g/L. What is the concentration of your final solution?.
Scene 46 (36m 22s)
∴. V. You add 100 mL of water to 400 mL of a solution whose concentration is 50 g/L. What is the concentration of your final solution?.
Scene 47 (36m 49s)
Can I try now?!.
Scene 48 (37m 4s)
I. II. III. IV. PRACTICE.
Scene 49 (37m 8s)
Image result for red push button. Image result for red push button.
Scene 50 (37m 29s)
Practice 1. Image result for yellow push button. Big Dome Pushbutton - Green (Economy) - COM-11961 - SparkFun ....