What do you call to the unit amount of a substance used for measuring large quantities of very small entities such as atoms, molecules or other specified particle like counting molecules of medicine in 0.20g confusion?
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Q: Which of the following is not an equivalent to ppm? a.mg/L b.ug/g c.g/ton d.uL/mL x 106
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What do you call to the unit amount of a substance used for measuring large quantities of very small entities such as atoms, molecules or other specified particle like counting molecules of medicine in 0.20g confusion?
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- You are asked to prepare 50 ml of a 1:100 rifampin (rifadin) and you have in stock a 1:20 rifampin suspension. How many milliliter of the 1:20 suspension and how many milliliter of water will you need?How many grams of NaOH would you need to make 3,982 mL of a 3 M NAOH solution (m.w. = 40.00 g/mol)? Report your answer in the requested units to the nearest 2 decimal places (Example "40.02"). Do not report the units in your answer; enter the numbers only. It is recommended that you do not round between calculation steps.You want to prepare a 15 mL gel containing 0.8% (weight /volume) agarose. How much agarosedo you need to weigh to prepare the solution? Show all your calculations.Hint: Write down the units for 0.8% knowing that agarose is a powder that is mixed with aliquid
- A 46.60-gram pycnometer was filled with 100.50 grams of liquid. When filled with insoluble powder, the pycnometer weighs 84.60 grams. When the insoluble powder and liquid were combined, the pycnometer weighed 172.8 grams. What is the relative density of the insoluble powder?A 46.60-gram pycnometer was filled with 100.50 grams of liquid. When filled with insoluble powder, the pycnometer weighs 84.60 grams. When the insoluble powder and liquid were combined, the pycnometer weighed 172.8 grams. What is the relative density of the insoluble powder? 2.1 2.6 3.1 None of the AboveA chemist prepares a solution of aluminum sulfite (Al, (SO,).) by measuring out 179. µmol of aluminum sulfite into a 300. mL volumetric flask and filling the flask to the mark with water. Calculate the concentration in mmol/L of the chemist's aluminum sulfite solution. Be sure your answer has the correct number of significant digits. mmol x10
- How many moles of Nal would be found in 250mL of a 4.5 M solution? Write your answer with three digits beyond the decimal point (IMPORTANT - zeroes count as a digit) The answer is molesHow many grams of glucose would you have to weigh out to make 500mls of a 0.5 M solution of glucose?The iodine contained in every one mL of the 0.010 M iodine solution in the buret will react with 1.76 mg of vitamin C. (In other words, every mL of iodine solution needed for the titration indicates the presence of 1.76 mg of vitamin C in the juice sample.) If your titration used 7.11 mL of iodine solution, what mass of vitamin C is in your fruit juice sample (in milligrams, mg)? Include the unit and two decimal places in your answer.
- An analysis of city drinking water for total hardness was done by two students in the laboratory and produced the following results (in ppm CaCO3): Student A: 228.3, 226.4, 226.9, 227.1, and 228.6. Student B: 229.5, 226.1, 230.7, 223.8, and 227.5 1. Calculate the following for each data set: (proper significant figures, neglect units) a) Mean for student A b) Mean for student B c) Relative standard deviation for student A d) Relative standard deviation for student B e) Confidence Level for Student A at 95% (write as a range for example: 200-300) f) Confidence Level for Student B at 95% (write as a range for example: 200-300) g) Which of the student have a more precise result? (write STUDENT A or STUDENT B)How many mL of 13x stock solution would you need to make 387 mL of 1x PBS. Report your answer to 1 decimal place.You are required to administer 40mg Propanolol Hydrochloride to your patient orally. The stock solution available is 50mg/5ml. How many millilitres would you administer? Please give your answer as a whole number Answer: ML Show Calculator < Previous