The concentration of cholesterol (C27H46O) in blood is approximately 5.0 mM. How many grams of cholesterol are in 250 mL of blood?
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The concentration of cholesterol (C27H46O) in blood is approximately 5.0 mM. How many grams of cholesterol are in 250 mL of blood?
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- Normal blood contains 3 mEq/L of Mg2+. How many milligrams of Mg2+ are present in 150.0 mL of blood?Creatinine, C4H7N3O, is a by-product of muscle metabolism, and creatinine levels in the body are known to be a fairly reliable indicator of kidney function. The normal level of creatinine in the blood for adults is approximately 1.0 mg per deciliter (dL) of blood. If the density of blood is 1.025 g/mL, calculate the molarity of a normal creatinine level in a 10.0 mL blood sample.To make up a solution of phosphate buffered saline (PBS), you need 10 mM Na2HPO4 (anhydrous) (FW: 141.96 g/mol), 3 M NaCl (FW: 58.44 g/mol), and 5mM KH2PO4 (FW: 136.09 g/mol). How many grams of each will you need to make up 850 mL of PBS?
- A solution is made by dissolving 9.5 g of sucrose, C12H22O11 (molar mass 342.3 g mol-1) in water to make 250.0 mL of solution. What is the molarity of the solution?A concentrated lidocaine solution contains lidocaine 1 g/5 mL. How many milliliters of this injection should be used to prepare a 500 mL IV infusion containing 8 mg/mL of lidocaine in D5W? Do not round.A 5 ml vial of hydrocortisone is having 2% (w/v) concentration. How many vials will be required, if we need to prepare 30 ml of a 8 mg/ml oral hydrocortisone?
- How many milliliters of 0.0050 N KOH are required to neutralize 25 mL of 0.0050 N H2SO4? To neutralize 25 mL of 0.0050 M H2SO4?A solution with a density of 0.876 g>mL contains 5.0 g of toluene 1C7H82 and 225 g of benzene. Calculate the molarity of the solution.A patient with severe pain is given 2 mililiters (mL) of morphine. What dosage is give in decimal grains (gr)?
- A 5 ml vial of the hydrocortisone is having 2% (w/v) concentration. How many vials will be required, if we needed to prepare 30 ml of a 8 mg/ml oral hydrocortisone?The molecular weight of ethanol (CH3CH2OH) is46 and its density is 0.789 g/cm3.A. What is the molarity of ethanol in beer that is 5%ethanol by volume? [Alcohol content of beer varies fromabout 4% (lite beer) to 8% (stout beer).]B. The legal limit for a driver’s blood alcohol contentvaries, but 80 mg of ethanol per 100 mL of blood (usuallyreferred to as a blood alcohol level of 0.08) is typical. Whatis the molarity of ethanol in a person at this legal limit?C. How many 12-oz (355-mL) bottles of 5% beer coulda 70-kg person drink and remain under the legal limit? A70-kg person contains about 40 liters of water. Ignore themetabolism of ethanol, and assume that the water contentof the person remains constant.The principal component of many kidney stones is calcium oxalate, CaC2O4 . A kidney stone recovered from a typical patient contains 8.5 * 1020 formula units of calcium oxalate. How many moles of CaC2O4 are present in this kidney stone? What is the mass of the kidney stone in grams?