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What concentration would a 100X stock of atrazine be if you will use it at 3 ppb?
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- 5. Calculate the total volume, in milliliters, of clindamycin 600 mg/4 mL solution needed to prepare four bottles containing 1 L of nasal irrigation solution at 500 PPM (w/v) concentration? Round to the nearest tenth.How will you prepare standard solution of catechin (50, 100, 150, 200, 250 and 300 mg/L) scaled down to 50 mL?15. You are given a series of 10 tubes. In the first is placed 9 milliliters of saline. In each of the others is placed 5 mL of saline. One milliliter of serum is added to the first tube. Five milliliters from this tube are transferred to the second tube, and 5 ml are transferred throughout the remaining tubes. Discard the last 5ml transferred. Give the following: a. Tube dilution for tubes 1 and 6 b. The solution dilution for tubes 1,4, and 7 c. The amount of serum present in tube #3 after transfer.
- 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.Xylometazoline hydrochloride paediatric nasal drops are formulated as a 0.05% w/v solution. What amount of xylometazoline hydrochloride is present in 10 mL of solution?A) 1 mgB) 5 mgC) 10 mgD) 50 mgE) 100 mgWhat volume of cefoxitin (50 mg/ml) should be added to 500 ml of tryptone soya brothto yield a solution with a final concentration of 8 µg/ml?
- How much of copper sulphate pentahydrate we need to prepare 0,5L 0,1 M solution?if 0.0125g of caffeine diluted with water in 250 ml volumetric flask give me a solution with a concentration of 0.05 mg/ml. how much theobromine is needed for a combined solution of the same 0.05 mg/ml concentration?How many grams of ethanol (C2H6O) are needed to make a 0.10 m solution using 1.000 kg H2O?