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How much Atrazine stock (9ppm Atrazine, DMSO) do I need to make 15.5 ml of (3ppb ATZ, cell culture media).?
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- 1) 0.1% w/v = ? mg/100 ml? 2) 0.1% = ? ug/ml? 3)What is the concentration of your stock in ug/ml? 4)The molecular weight of tartrazine is 534.4 g/mole. What is the concentration of your stock solution in mM? Be sure to give your answer in milliMolar to TWO decimal places.Sttoul SuluiIUN A client requires BI). wund eleasing with 3 eleasing Shrength hydrrgen Peroseide Aorder to prepare enough solutim to do turo wo und trieatments you will Prepare 500 mL of sulutiuusing a diluent. ofescribe themethod for miscing this sulutturj Nomal salineWhat should be the volume of concentrated acetic acid that should be measured to prepare 100 mL of solution with a concentration of 0.2 mol/L? (Data: T = 99.7%; d = 1.05 g/cm³; MM = 60.052 g/mol).
- 25mL 10% Na04 salution ? mmol theo mmoldikenzalacetone theo mass divemaaletone mass recovered 1 mmol 26g benzaldehyde. ? ML 2 mmol 7. 0.8mL acetone 2 mmolQ3/ A) 0.63 g of a sample containing Na CO,, NaHCO; and inert impurities is titrated with 0.2 M HCI, requiring 17.2 ml. to reach the phenolphthalein end point and a total of 43.5 mL to reach the modified methyl orange end point, How many grams Na CO, and NaHCO, are in the mixture?M OH Wa OH COME O NOBHY → MeOH (solvent) Na₂Cr₂O7+H₂SO4 + H₂O -H 1. CH3 Li 2. H30 OCH3 1. 2 CH3CH₂ CH₂Li. 2. H30+
- Please help me answer the following question. It will be a big help, thank you! *Express the formality (F) the concentration of each of the following solutions: a. 28.4 % NH3 by weight, having a density of 0.808 g/mL b. 69.5 % HNO3 by weight, having a density of 1.42 g/mL1a) 0.1% = ? ug/ml? Only include the number and not any units b) What is the concentration of your stock in ug/ml? Only include the number and not any units c`The molecular weight of tartrazine is 534.4 g/mole. What is the concentration of your stock solution in mM? Be sure to give your answer in milliMolar to TWO decimal places. d)What dilution of your stock do you need to get the first standard (100 ug/ml)? Express as 1:x, where x is the fold dilution needed.cium chloride per liter. Express the centration in terms of milliequivalents of calcium chloride (CaCl2-2H20-m.w 147) per liter. con- 27. How many milliequivalents/of potassium would be supplied daily by the usual dose (0.3 mL three times a day) of saturated potassium iodide solution? Saturated po- tassium iodide solution contains 100 g of potassium iodide per 100 mL.oluce 28. An intravenous solution calls for the addi- tion of 25 mEq of sodium bicarbonate. How many milli 4%
- Some years ago, two drug companies marketed a drug under the trade names Dexedrine and Benzedrine. The structure ofthe drug is shown below. The physical properties (C, H, and N analysis, melting point, solubility, etc.) of Dexedrine and Benzedrine were identical. The recommended oral dosage of Dexedrine (which is still available) was 5 mg/day, but the recommended dosage of Benzedrine (no longer available) was twice that. Apparently it required considerably more Benzedrine than Dexedrine to yield the same physiological response. Explain this apparent contradiction.A 786 mLmL NaClNaCl solution is diluted to a volume of 1.19 LL and a concentration of 3.00 MM . What was the initial concentration C1C1C_1?- Mass, & PPM S Add-ons Help Accessibility Last edit was4. BI U A Arial 12 Parts Per Million (ppm) 229i moles of of Sioin th bolution Whan are the gpm 3. A factory is duriping a1,250 kildgram sample of lak Hg(OH)2 is 299 ppm. is this the local lake, An investigation shows that of Ho OH) If the maximum safe level of 4. 35 years after the Chemobyy Nitride (U,N) af 12.55 ppm. If the sample UN, were in this sample? How many molecules of UN were in this sample? water has a concentration of Uranium a vieight of 2.25 kilograms, how many moles of omember tig1000 1 Liter 1000 w