D Br O 1) LIAID4, diethyl ether; 2) D20 1) HOCH2CH2OH, H*: 2) Mg, THF; 3) D20; 4) H3O* O 1) Mg, THF; 2) D20 1) HOCH2CH2OH, H*; 2) DCI; 3) H30*

a) Lysine is an essential amino acid. It is taken by some people as a nutritional supplement in the form of a hydrated crystalline solid with the formula C6H₁4N2O2.XH₂O . To control the dose of lysine, it is essential to know the complete formula of the hydrate, which means determining the value of x. To determine the value of x in lysine hydrate, a pharmacist used a direct titration method. She dissolved 6.258g of the compound in approximately 100mL of distilled water and then made this up to 250mL in a volumetric flask. She then titrated 25mL aliquots of this solution with a standardized NaOH solution of concentration 0.1050 mol dm-³, obtaining a mean titre of 36.30 mL. In titrations, lysine behaves as a monoprotic acid. Use these data to determine the value of x in lysine hydrate. b) In a second experiment to verify the value of x, the pharmacist heated a 3.752g sample of the lysine hydrate to drive off all the water. When she reweighed the sample, the mass was 3.278 g. Use this…

Which of the following developments made cigarettes dangerous? i. Automated cigarette rolling ii. The addition of ammonia to tobacco iii. Flue cured tobacco iv. Chemical additives in cigarette paper v. Lighting three cigarettes on one match Oi, ii and iii O i, ii and iv ii and v i and iii

1) NaNH2 2) CH31 H2, Pd/C/ HBr 1 eq H2O, H2SO4 HgSO4

The active ingredient of Benadryl© Chesty Forte Cough Liquid is Guaiphenesin anexpectorant drug used to assist the expectoration ('bringing up') of phlegm from theairways in acute respiratory tract infections. A 200.0 mL bottle of Benadryl© ChestyForte Cough contains 4.00 g of Guaiphenesin (C10H14O4).  i. If the recommended dose for a child is 150 mg of Guaiphenesin. What volume of thecough liquid should be administered?

sk: The Chemistry of Respiration Quantities 2. Examine the two scenarios belowoi6g • Scenario A: 100 g of glucose in the presence of unlimited oxygen is metabolized through aerobic respiration. • Scenario B: 100 g of glucose in the absence of oxygen is metabolized through anaerobic respiration. Would the mass of products produced in Scenario A be greater than, less than, or equal to the mass of products produced in Scenario B? Justify your answer.

!קרט Mn02+4A1 3Mn +2Al.03 and Meducing agent fhom the woud juabe Bunnpa4

Calculate the cost per individual molecule of your pain reliever. Acetaminophen has the chemical formula C8H9NO2. Ibuprofen has the chemical formula C13H18O2. Paracetamol has the chemical formula C8H9NO2.

a) 1 equiv LDA ASOS et IngA O ni eslor b) arose neais) - TS# enoiteḤA noitbbAisquino od oni O c) Mel SS INQA,yebnoM 1900

Which of the following is a benefit of implementing a Total Productive Maintenance (TPM) program? a) Reduced downtime b) Increased production costs c) Higher inventory levels d) Longer lead times