Limiting reagent - Study guides, Revision notes & Summaries

Determine the limiting reagent and excess reagent in the reaction you will perform in this experiment. correct answer: Limiting reagent- triglyceride Excess reagent- methanol unsaturated fatty acids correct answer: one/more C=C bonds saturated fatty acids correct answer: no C=C bonds The addition of water to sodium methoxide produces_________ & ________ correct answer: sodium hydroxide, methanol After completion of the experiment, where do you dispose of FAMEs? correct answer: ...

Med Chem II Exam #1 With 100% Correct Answers 2024 What side of the growing peptide chain does coupling with DIC add to in solution? N-terminus Protecting group used with an acid reagent Boc Protecting group used with a base reagent Fmoc Protecting group used with Pd/C, H2 reagent Cbz Advantages of solid phase peptide synthesis (3) 1. Can drive reactions to completion by using huge excesses of reagents 2. Easy purification after each chemical step 3. Widely diverse selection of res...

CHEMISTRY QUESTIONS AND CORRECT ANSWERS[2024)20Practice 1-1 (HW) Stoichiometry and Limiting Reactants Show your work for every calculation. Round your answer to the correct number of significant digits needed. 1. a. A sample of nicotine containing 0.35 moles has a mass of 56 grams. What is the molar mass of nicotine? 160 g/mol b. Nicotine is 74.1% carbon, 8.6% hydrogen, and 17.3% nitrogen by mass. What are its empirical and molecular formulas? EF = C5H7N MF= C10H14N22. Butane lighters wor...

3 driving forces for a metathesis reaction 1. Precipitation 2. Gas 3. Formation of a weak or non-electrolyte 7 s trong acids - HCl = hydrochloric acid - HBr = hydrobromic acid - HI = hydroiodic acid - H2SO4 = sulfuric acid - HNO3 = nitric acid - HClO3 = chloric acid - HClO4 = perchloric acid Accuracy How close a measurement is to its true value Average X ̅ = (∑Xi )/n Boiling point The temperature at which the vapor pressure of the liquid equals the prevailing atmospheric pressure...

What are saturated vs unsaturated fatty acids? correct answer: •Saturated fatty acids have no C=C bonds (their C's have max # of Hs) •Unsaturated fatty acids have one or more C=C bonds (monosaturated = one double bond) (polyunsaturated = more than 1 double bond) •Z (cis) are naturally occurring double bonds; E (trans) are artificial double bonds How is biodiesel produced commercially? Which method is predominant? correct answer: ***1) Base catalyzed transesterification of oil with ...

Chem Lab - Final Exam Questions & Answers Already Passed Three methods of separating compounds - ️️Filtration, sublimation, evaporation Filtration - ️️the process that separates a solid from the liquid in a heterogeneous mixture Sublimation - ️️A change directly from the solid to the gaseous state without becoming liquid Evaporation - ️️Removing a liquid from a mixture by turning it into a gas. Solve for the mass of a chemical in a container - ️️[mass total] - [mass empty d...

Which of the following condition is the most common cause of increase anion gap? A.Metabolic alkalosis B. Metabolic acidosis Respiratory acidosis Respiratory alkalosis - correct answer B. Metabolic acidosis High anion gap metabolic acidosis is caused generally by the body producing too much acid or not producing enough bicarbonate. This is often due to an increase in lactic acid or ketoacids, or it may be a sign of kidney failure. More rarely...

Unsaturated fatty acids - have one or more C=C bonds Saturated fatty acids - Have no C=C bonds What are the ways that biodiesel is produced commercially? Which method is the predominant method? - 1) Base-catalyzed transesterification of the oil with methanol and one used in lab. 2)Acid-catalyzed esterification of the oil with methanol 3) Saponification of the oil to yield free fatty acids, followed by acid catalyzed esterification. Match the products and catalyst for the following tran...

With increasing levels of beam filtration where will the greatest dose savings be realized? A. in the initial layers of tissue struck by the beam B. in tissues at the midline C. in tissues at the exit surface of the patient D. at the level of the patient's gonads correct answer: A. in the initial layers of tissue struck by the beam Which of the following barium/air filled anatomic structures is best demonstrated in the LAO position? A. ileocecal valve B. sigmoid colon C. splenic flex...

ACE ASCP Final Exam Questions and Answers, Latest Updated 2024/2025 | Rated A+. Which of the following condition is the most common cause of increase anion gap? A.Metabolic alkalosis B. Metabolic acidosis Respiratory acidosis Respiratory alkalosis B. Metabolic acidosis High anion gap metabolic acidosis is caused generally by the body producing too much acid or not producing enough bicarbonate. This is often due to an increase in lactic acid or ketoacids, or it may be a sign of kidney fail...