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How many moles of aspartame are present in 2.50 mg of aspartame?
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- how many carbon atoms are in 10.0 mg of melatonin?4. Two engineers are serving as trainees in a laboratory of a pharmaceutical company. One of their tasks involves determining the identity of a vitamin they were given by using any equipment or method at their disposal. As a hint, their supervisor gave them a list of possible candidates for the vitamins identity which includes: Vitamin Molecular Formula Folinic Acid C20 H23 N707 C3H11NO3 C,H,N20 C17H20N406 Pyridoxine Niacinamide Riboflavin To identify the vitamins identity, the two trainees separated their sample into two equal portions and performed two separate tests: [a.] Engr. Mayo used the flame atomic absorption spectrophotometer in order to identify the elemental composition of the sample which happens to be 59.0% C, 5.0% H and 22.9% N by mass [b.] Engr. Busog on the other hand mixed his 3.88 g sample with 30.0 mL of nitrobenzene, C,H5NO2 (Latent Heat of Fusion = 79.81 J/g). Using Beckmann's method, he determined the freezing point depression to be 7.1 deg C. Based on the tests…What is the molar mass of pseudoephedrine hydrochloride? (b) How many molecules of pseudoephedrine hydrochloride are in a tablet that contains a dose of 30.0 mg of this decongestant?
- What is q of Fe?Q3 How many mg of NaCl (FW = 58.44 g/mol) are contained in 2.35 mmol of the compound ?Consider aspirin (acetylsalicylic acid), C9H8O4 a. How much does one mole of aspirin weigh, in grams? b. How much does one molecule of aspirin weigh, in grams? c. How much carbon does aspirin contain, as a percentage by weight?
- 2. The Anemovax COVID-19 vaccine uses 0.950% (w/v) NaCl (normal saline, preservative- free) as its diluent. After removing from the freezer or refrigerator, the vaccine must be mixed with the diluent before administration. It is diluted to a total volume of 10.0 mL, and each vial contains eight doses. a. Calculate the mass (in grams) of NaCl that is needed in order to prepare a total of 10,000 doses of the vaccine. b. Express the concentration of the vaccine diluent in molarity. (MW = 58.44 g/mol) One vial of Anovax vaccine contains an unknown mass of vaccine dose. It was diluted to 20.0 mL. A 25.0-µL aliquot was taken and was further diluted to 2.00 mL. Another 1.00- mL aliquot was taken and was diluted to 1.8 mL. Finally, this 1.8mL was found to have enough vaccine for five 20-ug doses of vaccine. c. How many milligrams of Anovax vaccine is present in the first vial?For each of the following antibiotics, determine how many moles of each compound are present for the given mass. What quantity in moles of tetracycline (C22H24N2O8) are in 77.9 grams?4) Vitamin B3, also known as niacin, helps maintain the normal function of the skin, nerves, and digestive system. The disease pellagra results from a severe niacin deficiency. Niacin has the following formula: C6HSNO2. Often tablets contain vitamin B3 in the form of niacinamide, C6H6N2O, which is easier to absorb. a. A vitamin tablet contains 100 mg of niacinamide. What mass of niacin contains an equivalent number of moles as 100 mg of niacinamide? b. What is the Recommended Daily Intake (RDI) for niacin? C. Create a list of foods that contain niacin. d. What is pellagra? What are the consequences of ingesting too MUCH niacin?
- A0.7547 g sample of nicotine was analyzed and found to consist of 0.5588 g C, 0.06565 gH, and 0.1303 g N. What is the percentage of C in nicotine? % C eTextbook and Media What is the percentage of H in nicotine? % H What is the percentage of N in nicotine? %NCalculate the number of grand of sodium in 9.1 g of each of the following sodium-contaning food additives. 1) Na3PO4 (sodium phosphate) 2) Na2C6H6O7 (sodium hydrogen citrate)Consider the molecule tetrahydrocannabinol (?21?30?2), or THC: How many milligrams (mg) of THC are present in 4.20×10-4 moles of THC?