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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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- 4. How to prepare a 1:10 dilution of serum to saline?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.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.
- 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 mg1) 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.What 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?
- 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 much of copper sulphate pentahydrate we need to prepare 0,5L 0,1 M solution?1) 0.1% w/v = ? mg/100 ml? Only include the number and not any units 2) 0.1% = ? ug/ml? Only include the number and not any units 3) What is the concentration of your stock in ug/ml? Only include the number and not any units 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. 5)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. 6)What weight of tartrazine (in mg) would you need to make up 250 mL of a 2.5 mM solution (MW of tartrazine is 534.4 g/mole)? Give your answer to the nearest whole number. write the number only, not the units