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To prepare 0.5 M phosphate buffer pH 7.0, dissolve the appropriate amounts of monobasic potassium phosphate and dibasic potassium phosphate in water. Adjust the pH using either dilute HCl or NaOH, while continuously checking with a pH meter until pH 7.0 is reached. Dilute to the desired final volume with water if needed and ensure that the final pH is within the acceptable range.
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How do you prepare Salkowski reagent?
Mix 2 ml 0.5M FeCl3 and 48 ml water and 50 ml 70% perchloric acid.
How much in pounds is 70 grams?
70 grams is about 0.154 pounds.
How many neutrons are in the nucleus of germanium of -70 istopes?
Germanium has 32 protons, so for an isotope with atomic number of 70, it will have 70 - 32 = 38 neutrons in its nucleus.
How much is 70 grams in oz?
70g = 2.47oz
How do you prepare 5 percent nitric acid solution from 55 percent nitric acid?
To solve this problem, we basically have 2 equations and 2 unknowns. The unknowns are the (volume of water) & the (volume of 70 wt%) nitric acid to add. * This problem will assume that you are interested in making 1 L (or 1000 mL) of 5 wt% nitric acid solution. Equation 1: (volume of water) + (volume of 70 wt% nitric acid) = 1000 mL Equation 2: mass of nitric acid / [mass of water + mass of 70 wt% nitric acid solution] = 0.05 (0.05 is 5 wt%) * Remember that mass = density * volume * Remember that 70 wt% nitric acid solution mean that for 100 grams (gm) of this acid, then there's 70 grams of HNO3 * Remember that density of 70 wt% nitric acid solution is 1.413 gm/cm^3 * Remember that density of water is 1 gm/cm^3 Equation 2 is now re-written as: [(density of 70 wt% nitric acid soln)*(volume of 70 wt% nitric acid)*0.70] / [(volume water)*(1gm*cm^3) + (volume of 70 wt% nitric acid)*(1.413gm/cm^3)] = 0.05 Solving for the 2 equations gives answer to the 2 unknowns: Answer: To make 1000 mL of 5 wt% nitric acid solution, add 1) 51.63 mL of 70 wt% nitric acid solution 2) 948.37 mL of water
What bank this sort code 05-05-70?
natwest
How long it takes a mummy to be prepared?
It takes 70 days to prepare a mummy.
How much 95 percent alcohol must be used to prepare 1000 ml of 70 percent alcohol?
To prepare 1000 ml of 70% alcohol solution, you would need to mix 700 ml of 95% alcohol with 300 ml of water. Starting with a base of 95% alcohol ensures that the final solution will be at least 70% alcohol.
How do you set the selling price based on food cost percentage?
Suppose you want a 70% profit on a wedding cake that cost you $100 to prepare. 70% profit means 30% food cost. eg. 70% = Selling Price - $100 Selling Price = 100+((70/100)*100) = 100+70 = 170 Therefore, if you charged $170 for a cake that cost you $100 to prepare, the food cost percentage of your product would be 30% -- and you would gain 70% profit.
How does one prepare 500ml of 70 percent ethanol?
150 ml ethanol to 350 ml distilled water
How can you prepare radiator coolant?
most coolant is 50/50 mix. however in arctic climate it is 50/70 mix
What is 5 percent sales tax on a 14.00 disk?
5% of $14 = 70 cents Because $14 = 1400 cents. (Each $1 = 100 cents) 5 cents on every dollar. 5 x 14 = 70 Or as 5 cents is wrtten as .05 of a dollar (think $1.05 is how $1 with 5 cents would read) - .05 x 14 = .70
How do you prepare 1 percent gentian violet?
1) take 10gm of gentian violet. then add to them: 2) Alcohol 70% ( H2O).... to 1000 ml
How much 95 percent alcohol is required to prepare 5 L of 70 percent alcohol?
70/19 or 3.684 liters. Here's how. 5 liters of 70% alcohol contains 3.5 liters of pure alcohol. So if X equals the answer to the question, then 0.95 * X = 3.5. That means X = 3.5/0.95 or "normalizing" the fraction gives 70/19 = 3.684L.
How much total c02 in the blood is carried as bicarbonate?
Approximately 70% of carbon dioxide in the blood is carried as bicarbonate (HCO3-) via the bicarbonate buffer system, allowing for efficient transport and buffering of carbon dioxide in the body.
How much is a speeding ticket going 84 in a 70 mph zone in GA?
As of 04/05/2012 it is $150.00 and if you pay online there is a $20.00 surcharge.
What percent of the mass of bone is a compound called hydroxyapatite?
Hydroxyapatite makes up about 65-70% of the mass of bone. It is a mineral compound primarily composed of calcium and phosphate that provides bone with its strength and hardness.
