relative density of the insoluble powder
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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?
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- 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 radiograph was produced using 80 kVp, 800 mA, .75 seconds and a 72 inches SID. In order to maintain the same density, how much time should be used with the following factors: 92 kVp, 200 mA, and 36 inches SID?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
- 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.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)A physician has ordered 5 gr of a medication. It is available in solution form as 20 gr per fl oz. How many fl oz should you give? How many cc would you give? How many minims would this be?
- 1) What is the prefix that is used when we are expressing 1/1000 of the unit? 2) What is the unit of measurement for volume? 3) How many grams (g) are in 200 micrograms (ug)? 4) There are 2.54 cm in an inch. There are 12 inches in a foot. Calculate the height of a 6-foot 11-inch person in meters. 5) How many micrograms (ug) does 1 ul of water weigh? 6) Convert the following numbers: a. 1 ul = ml b. 1.534 cm = mm c. 46.8 ul = dl d. 6.9732 ug = kg 7) A drug is given at a dosage of 25 mg / kg body weight. a. Convert this dosage to ug per kg (ug/kg). b. How many ug of the drug in question a should be administered to a person who weighs 77 kg? 8) At rest the left ventricle of the heart pumps 5.0 liters of blood per minute (this is known as the cardiac output). Blood flow to the kidneys is approximately 1,220 ml per min at rest. a. What percentage (%) of the cardiac output do the kidneys receive at rest? b. Assume that the kidneys will receive the same percent of the cardiac output that was…You wish to quantify your favourite compound in an experimental solution using spectrophotometry. First, you use standard solutions of your favourite compound to collect the following standard curve data. Calculate the slope of the line of best fit to two decimal places, and enter it in the box below the table. Standard curve data Conc (MM) 0.300 0.600 0.900 1.200 1.500 Abs 0.225 0.450 0.675 0.900 1.125 Next, you prepare an experimental sample by mixing 0.25 mL of the compound solution with 9.75 mL of distilled water. Calculate the dilution factor and enter it as a whole number (no decimals). Next, you read an absorbance of 0.72 absorbance units for the diluted sample. Calculate the concentration (mm) of the original solution of the compound. Round this answer to one decimal place. Previous Page Next Page MacBook Air Page 5 of 13An order was received for 750 mL of 7.5% dextrose solution using 5% D5W and 20% D20W. How many parts of each dextrose solution is needed?(round answers to the nearest tenth)
- Choose the correct response based on the figure: 4.60O The mass of the powder is 4.60 milligrams, if the balance was tared with the weigh boat. The weight of the powder is 4.60 grams, if the balance was tared with the weigh boat. The mass of the powder is 4.60 grams, if the balance was tared with the weigh boat. The mass of the object is 4.60 millilitersIf skin cleaning solution is to be diluted 1 teaspoon to 64 ounces of water, how much water would need to be added to a container containing 1/4 teaspoon of skin cleaning solution?You have a stock solution of 40% hydrogen peroxide. You need to make several dilutions for a calibration curve. Calculate how much volume of the stock hydrogen peroxide you need to make 50 mL of 11% hydrogen peroxide.