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Understanding & Calculating Dilution Factors
Calculate the final dilution factor after the following steps:
Add 1 liter of blood to four liters of water, then take 1 ounce of that solution and add it to 9 ounces of water. Finally, take 3 mls of that dilution and add it 567 mls of water.
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Using a Serial Dilution to Count Bacteria in a Sample
The first dilution was to take 5 ml of lake water and put it into 50 ml of diluent. This gives you a 5/50 dilution which can be reduced down to 1/10.
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Dilution Chemistry Problems
258356 Dilution Chemistry Problems 1.)If I wanted to make 50ml of a 1/20 dilution of a 0.1 M salt solution, how would I go about doing this; meaning what volume of 0.1 M salt solution and what volume of water would I need to add?
2.)
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Microbiology Questions on competency, lysogeny & dilution
Serial dilution is a technique of diluting microbial cultures/solution that involves the removal of a small amount of an original solution to another container which is then brought up to the original volume using the required buffer or water.
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Calculate the Total Cell Number
One ml of this solution is taken and diluted in another 249 ml of water, and this time the OD675nm gave the reading of .27. If the turbidity of .27 corresponds to 4X10^5 cell/ml. Calculate the total cell number in the original culture.
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Working with molarity,molality and PH
Therefore:
moles of solute before dilution = moles of solute after dilution
Molarity = moles of solute/volume of solution in liters
Moles of solute = Molarity*liters of solution = 2.56*10 = 25.6
New molarity = 25.6/250 = 0.1024 M
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Dilutions
This is 6 1:3 serial dilutions, 1:3^6, for a final dilution of 1:729
7-5. Add 3 mL of water to each tube, and then make the initial dilution by adding 1 mL of stock.
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Concentration, Rate of Flow and Dilution
73565 Concentration, Rate of Flow and Dilution In a tank containing 100 gallons of fresh water, 10 lbs of salt was added instead of 20 lbs.
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Making a dilution
V1 = 15 x 100/ 756,431
V1 = 0.0019 ml, which is quite insignificant as compared to 99.998 ml of water required to make the volume up to 100 ml. These insignificant amounts lead to errors and the dilution is not accurate.
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Dilution of ownership on sale of additional shares
16.7%
Requirement B
Number of shares to own = 1.2 million x 30% = 360,000 shares
Number of shares to purchase = 360,000 - 300,000 = 60,000
The stockholder should purchase 60,000 shares in the open market to maintain her 30%ownership interest Dilution