Bunsen burner Study guides, Class notes & Summaries

Practicals Chemistry AQA A-level Rated A+ Required Practical 1 - titration and making a standard solution Making a standard solution 1. weigh the required mass of solid using a sample bottle on a 2 dp balance. 2. transfer the solid into a beaker using distilled water to wash it out- preventing any solid remaining in the sample bottle. 3. reweigh the sample bottle and work out the difference. 4. Add 100cm3 of distilled water to the beaker to dissolve the solid (small volume of water) using a...

A student wants to make a solution of sodium chloride. Which piece of glassware should be used to correctly measure the amount of liquid needed to make the solution? - Graduated cylinder A student wants to find the mass of an unknown amount of calcium chloride. Which piece of lab equipment should be used to determine mass? - Balance A student needs to store a stock bottle of isopropyl alcohol, a liquid which burns easily. Where should the alcohol correctly be stored? - In the flammables sto...

G2 Gas Fitter / Technician Exam Set Prep Solution Questions And Revised Correct Answers PASSED!! What is the approximate ignition temperature of natural gas - ANSWER : 1200*F(649*C) The specific gravity of natural gas is - ANSWER : 0.6 The odorant added to natural gas for detection purposes is - ANSWER : mercaptan Major constituents of flue gases after the proper combustion of natural gas in air are: - ANSWER : CO2, H2O, N2, O2, and heat A bunsen flame is characterized by its -...

Microbiology UTA - Lab Practical 1 Questions with Verified Answers Identify the structure indicated by the red arrow... fine focus adjustment knob Identify the structure indicated by the red arrow... field diaphragm lever Which of the following objectives should be used with immersion oil... 100x objective Compound microscopes are able to maintain proper focus of a specimen when moving from low power to higher power magnification due to a property known as... parfocal What two f...

and observe mass and volume measurement. OBSERVATION & RESULTS: Beaker – wide mouth glass container, most familiar piece of equipment that we work with Flask – glass, narrow opening at the top, better suited for pouring, 1L flask is Erlenmeyer flask, and some have side arms to filter things by suction Volumetric flask – white line that goes around neck of flask which indicates 250ml, used to contain volume Gravity funnel – plastic, regular funnel Suction funnel - Suction, sucks t...

MCB2010 Lab HW and study guide for quiz 1 and midterm Exercise1 -Answer-Exercise1 1. All of the organisms we work with are pathogenic... A. TRUE B. FALSE -Answer-B. FALSE 2. All of the organisms we work with should be handled as if they are pathogenic A. TRUE B. FALSE -Answer-A. TRUE 3. All of the organisms we work with should be handled as if they are opportunistic A. TRUE B. FALSE -Answer-A. TRUE 4. Wash hands with disinfectant and wipe bench tops with soap and warm water before st...

Microbiology Lab Exam 2 – Questions & Answers (100% Correct) Microbiology Lab Exam 2 – Questions & Answers (100% Correct) What three color pencils are needed? - ANSWER - blue, red, green How are endospores freed form the vegetative cell in which they form? - ANSWER - released when losses the surrounding sporangium What drugs are used to treat tuberculosis? - ANSWER - rifampin, isoniazid, ehtambutol, and pyrazinamide What drugs are used to treat leprosy? - ANSWER - rifampin Wh...

Experiment #: 6 Title: Equilibrium Reactions Purpose: To study equilibrium reactions with two experiments 1. Determine the equilibrium constant Kc and 2. Study LeChatelier’s Principle Procedure: 1. Add 10mL acetic acid and 10mL propyl alcohol in a small flask using a pipette. Mix well 2. Take 1mL pipette sample from flask and place in beaker. Add in about 25mL of water and a few drops of phenolphthalein indicator. 3. Titrate with sodium hydroxide in buret until color change. Record mL ...

Spills or accidents should be reported to instructor Broken glass should be disposed of in designated container students should always wear lab apron and goggles Equipment and reactions are placed where in the fume hood as far back as possible fire can be caused by volatile solvents such as ether, acetone, and benzene kept in open flasks and beakers explosion can be caused by heating or creating reaction in a closed system, vented systems prevent this chemical/thermal burns cor...

Weighing a solid - CORRECT ANSWER 1. Zero the balance 2. Place weighing bottle/boat onto balance and add in the approximate required mass of solid 3. Accurately weigh solid and weighing bottle and record 4. Empty solid into glassware where it will be used 5. Accurately reweigh empty weighing bottle 6. Subtract recorded mass for empty weighing bottle from mass recorded for solid and weighing bottle Measuring a volume of a liquid using a pipette - CORRECT ANSWER ...