The pipet Study guides, Class notes & Summaries

Accuracy - correct answer Refers to a measurement giving the actual value for a sample with a limited deviation; example: determining the weight of a sample to be 1g plus or minus 0.001g Precision - correct answer Repeatability of a set of measurements, and getting very close values to each other. Test tubes - correct answer small tubes that allow a large number of samples to be arrayed in a rack for easy processing. Beakers - correct answer Wide-mouthed cylinders with a lip to allow po...

CWEA Grade I Laboratory Analyst, questions and answers 2023 Chloride - Major anion found in many natural waters - Can impart salty taste in H2O What increases concentration of chloride in wastewater Chloride in human diet and softeners flushed into sanitary sewer system 2 most prevalent methods of measuring chloride argentometric and mercuric nitrate Argentometric Titration of sample with standard solution of silver nitrate (AgNO3) - Indicator: Chromate ions (CrO4) -...

CWEA Grade I Laboratory Analyst Exam Review questions and answers, verified. .If you have been given instructions you dont understand - -Ask the author 2 color reporting - -True and Apparent 2 most prevalent methods of measuring chloride - -argentometric and mercuric nitrate Accuracy - -The combination of bias and precision of an analytical procedure, which reflects the closeness of a measured value to a true value Acid - -A compound which liberates hydrogen ions and has a pH below 7. ...

What are four types of centrifuges commonly used in the clinical lab? - Tabletop, Micro, HighSpeed, and Ultra. What does the daily maintenance of a centrifuge commonly consist of? - Cleaned with 10% bleach What does the periodic maintenance of a centrifuge commonly consist of? - Speed check by tachometer What is the function of a centrifuge in the clinical lab? - To separate substances based on density by centrifugal forces. What is the RCF formula? - 1.118 -5 X 10 X r X rpm2 What is the...

Title: Equipment, Safety, and Mass/Volume Measurement Purpose: To go over the safety aspects of working in the chemistry lab. Go over the equipment that will be used in the chemistry lab. To observe mass and volume measurements. Procedure: 1. Review commonly used laboratory equipment. 2. Review commonly available safety equipment. 3. Measure mass of cellphone using analytical scale #1 4. Measure mass of graduated cylinder using analytical scale #1 5. Measure mass of metal cylinder using ...

CHEM 121 LAB - FINAL EXAM: STUDY GUIDE (UNR) EXAM QUESTIONS WITH COMPLETE SOLUTIONS VERIFIED An Approximation Every measurement made in the laboratory is really an ... Pipet A ... is a glass vessel calibrated to deliver a precisely known value of liquid at a given temperature. (A+B)/2 The arithmetic mean of A and B is ... Objects at Room Temperature In the laboratory we can weigh ... Volume Density is defined as mass per unit / by ... False True/False: The number of significant fi...

Accuracy - Answer-Refers to a measurement giving the actual value for a sample with a limited deviation; example: determining the weight of a sample to be 1g plus or minus 0.001g Precision - Answer-Repeatability of a set of measurements, and getting very close values to each other. Test tubes - Answer-small tubes that allow a large number of samples to be arrayed in a rack for easy processing. Beakers - Answer-Wide-mouthed cylinders with a lip to allow pouring Erlenmeyer flasks - Ans...

Answer the following five questions: 1. What is the device shown below? 2. What is the wire device put under container to spread the heat? 3. What is the weighing dish used for solids? 4. What is the temperature scale used in the chemistry lab? 5. What device is always turned off as we leave the lab? Your Answer: 1. Burette 2. Wire Gauze 3. Weighing Dish 4.Thermometer 5. Vaccumm and compressed air lines 1. The device shown below is a buret. 2. The wire device put under container t...

MLT Practice Exam Questions with All Correct Answers The device used for capturing data from instruments and processing them without delay is: a. A modem b. An interface c. A CPU d. A printer - A interface By attending an approved continuing-education program of one-hour in length, and individual can receive credit for: a. 10.0 CEU(continuing education units) b. 1.0 CEU c. 0.1 CEU d. 0.01 CEU - Answer-C.0.1 CEU While running coagulation tests on a photo-optical instrument, the cl...