Excess reagent - Study guides, Study notes & Summaries

Stoichiometry the mole ratios among the reactants and products in a chemical reaction chemical equation a description of the identities and proportions of reactants and proucts reactants substances consumed during a chemical reaction products substances formed during a chemical reaction molecular mass the mass in amu of one molecule of a molecular compound molar mass the mass of one mole of a substance formula mass mass in amu of one formula uni...

Urinalysis and Body Fluids || Success Questions & Answers (100% Correct) Urinalysis and Body Fluids || Success Questions & Answers (100% Correct) Why is the first-voided morning urine specimen the most desirable specimen for routine urinalysis? A. Most dilute specimen of the day and therefore any chemical compounds present will not exceed the detectability limits of the reagent strips B. Least likely to be contaminated with microorganisms because the bladder is a sterile environment C. Mo...

• Typical NMR chemical shift for methyl protons adjacent to a ketone 2.1-2.6 ppm • Level of solvent on a TLC plate Below the spots when first placed in the developing jar, and then it will eventually rise to the top past the spots Previous Play Next Rewind 10 seconds Move forward 10 seconds Unmute 0:00 / 0:15 Full screen Brainpower Read More Column Chromatography Provides a method for the separation and isolation of individual components of a mixture •...

Principle of PFA-100 correct answers -Assessment of platelet function -Time required for platelet plug to occlude the aperture is an indication of platelet function Reagent Used in PFA-100 correct answers Citrated whole blood Purpose of PFA-100 correct answers Test platelet function Interpretation of results for PFA-100 correct answers Collagen/EPI → 78-199 seconds Collage/ADP → 55-137 seconds Disease Association with PF-100 correct answers VWD, Bernard-Soulier Glanzmann's Th...

CHEM 209: QUIZ 1 with Complete and Verified Answers 1. What is a "back titration"? Answer: It's a technique where the concentration of an analyte is determined by reacting it with an excess of a known reagent. 2. What is the balanced chemical equation for the complete reaction between CO32− and HCl? Answer: CO32−(aq) + 2H+(aq) → H2O(l) + CO2(g) 3. What is the balanced chemical equation for the complete reaction between KHP (KHC8H4O4) and NaOH? Answer: KHC8H4O4(aq...

ASCP MLT Exam Practice Questions With 100% Correct Answers Updated 2024 (Graded A+) 1 unit or PRBC - answer Raises hemoglobin 1g and hematocrit 3% Leukoreduced RBCs - answer Less than 5 x 10^6 to prevent febrile non hemolytic reactions Cryoprecipitate - answer Factor 8 vWF Fibrinogen For DIC 6 hours Platelets 1unit - answer Irradiated blood - answer Prevent GVHD Ulex europaeus - answer Anti H lectin Dolichos biflorus - answer Anti A1 lectin Amount of H greatest to least - answer O A...

CSMLS Practice Exam - Questions and Answers (Complete Solutions) Which is the detector of choice for nephelometers? a. diode array b. photomultiplier tube c. gas photodiode d. LED Which statement regarding turbidimetry is NOT correct? a. light scattered by solutes in the solution at 180° from the incident light is measured by a photon detector b. the measurement of light is made at right angles to the incident light c. scattered light is directly proportional to the number of particles in sol...

Describe the proper technique for performing reagent strip testing. - Answer •Strips have chemical pads on plastic strip •Compare the color change on pads w/in required time frame •Dip strip into well-mixed specimen at room temp •Remove excess urine on edge of cup •Blot edge of strip on absorbent pad •Wait req time •Read in good lighting List four causes of premature deterioration of reagent strips, and describe how to avoid them. - Answer •Moisture •Volatile chem...

Describe how each of the following errors in reagent strip technique will affect test results: a. Leaving the reagent strip in the urine specimen while recording results of the previous specimen. - Answer-A reagent will leach from the strip, causing false negative results b. Failing to remove excess urine while withdrawing the strip from the specimen - Answer-Runover among pads will invalidate results c. Recording all results immediately after withdrawing the strip from the specimen. - A...

Determine the limiting reagent and excess reagent in the reaction you will perform in this experiment. correct answer: Excess Reagent: methanol Limiting Reagent: triglyceride Unsaturated Fatty Acids correct answer: have one (or more) C=C bonds. Saturated Fatty Acids correct answer: have no C=C bonds. The addition of water to sodium methoxide produces _______________ and ________________ correct answer: Sodium Hydroxide; Methanol After completion of the experiment, where do you d...