Halide test - Study guides, Revision notes & Summaries

▪ Potassium manganate (VII) and water (purple colour spreads), ammonia and hydrogen chloride (white ring forms closer to hydrogen chloride), bromine gas and air (brown bromine gas diffuses) - Ans .3 experiments to show diffusion ▪ 4OH- = O2 + 2H2O + 4E- - Ans .Half equation for hydroxide ions ▪ Moves slowly (on the surface), fizzes, eventually disappears - Ans .Lithium with water - observations ▪ Moves quickly (on the surface), fizzes rapidly, may ignite - Ans .Sodium with water ...

CHEM 237 - Organic Chemistry Lab Final TAMU Already Graded A Separation by liquid-liquid extraction is based on a) compound's dielectric constant in 2 dif solvents b) # of theoretical plates in the separation c) use of phase transfer catalysts d) difference in boiling points of 2 liquids e) distribution of a compound between 2 immiscible phases e) Distribution of a compound between two immiscible phases. Preparative gas chromatography is often chosen over distillation as a means of separa...

CIH Exam Questions with correct Answers 2023 Mist/Fog particle size 5-100 um Smoke particle size less than 1 um Fume particle size less than 1 um (tend to agglomerate into clusters) Breathing Zone NEW - hemisphere forward of sholders with a radius of 6-9" OLD - 2' diameter sphere centered on head Systematic Error Correctable error - malfunction of sampler, instrument, or operator - affects accurancy (not precision) Random Error Unknown/uncontrollable ...

What are the group 1 metals known as? - Ans .The Alkali Metals Reactivity within the groups: - Ans .Alkali metals: reactivity increases as you go down, melting point/boiling point decreases as you go down Halogens: reactivity decreases as you go down and melting point/boiling point increases as you go down What properties do the group 1 metals have? - Ans .They all have similar properties as they all have one outer shell electron that is lost readily to form a +1 ion. They all have: ...

ARRT Test Prep questions and answers 2024 Main property of x-radiation that makes it potentially hazardous is its ability to? - ANSWERS Ionize Describe the damage potential of ionization? - ANSWERS Chain reaction in the human body that may eventually cause biologic damage. X-rays are from the Electric Magnetic Spectrum or radiation energy and is considered harmful in high energy ranges. What is the most likely potential hazard working with diagnostic radiology? - ANSWERS Carcinogenesis ...

ABO EXAM PRE-TEST STUDY GUIDE (VERRIFIED SOLUTIONS) 150 mm - CORRECT ANSWER-When ordering a six inch temple, its corresponding millimeter value is which of the following? A. 135 mm B. 140 mm C. 145 mm D. 150 mm 500 mm - CORRECT ANSWER-What is the focal length of a 2 diopter lens? A. 500 cm B. 39.37 inches C. 500 mm D. 2 meters Nanometers - CORRECT ANSWER-Wavelengths are measured in A. Meters B. Decimeters C. Centimeters D. Nanometers UVC - CORRECT ANSWER-Which of the followi...

Honors Chemistry Unit 4 Test Already Graded A+ Ionic Bond: ️ Force of attraction between two oppositely charged ions formed by one particle losing electrons and another gaining electrons. ️ Formed when one atom takes an electron from another atom—ions are the result (one positive, one negative)—they stick together because of opposite charges. ️ Difference between electronegativities is high. ️ Involves metals (low electronegativity) losing electrons to form cati...

ABO Practice Test (Questions and Answers 100% correct) When discussing thick lenses, the factors which are considered in computing the lens power are: a. front curve, thickness and index b. back curve, thickness and index c. front curve, back curve and thickness d. front curve, back curve, thickness and index - Answer ️️ -d. front curve, back curve, thickness and index Toric transposition shows: a. lens thickness b. power in principal meridians c. the power of the ADD d. the lens ...

1. For lower premolars, the purpose of inclining the handpiece lingually is to, A. Avoid buccal pulp horn B. Avoid lingual pulp horn C. Remove unsupported enamel D. Conserve lingual dentine - ANSWER A. Avoid buccal pulp horn Explanation 1- avoid BUCCAL pulp horn 2- conserve ling. dentine So take A and B if available 2. For an amalgam restoration of a weakened cusp you should, A. reduce cusp by 2mm on a flat base for more resistance B. reduce cusp by 2mm following the outli...

An example of an antidiabetic drug. a. metformin b. phenytoin (Dilantin) c. furosimide/ lasix d. warfarin/ coumadin - a. metformin A radiographer looking to relocate to another state for similar employment is advised to check into the state's _____ requirements to ensure qualified. a. professional membership b. licensure c. registry d. accreditation - b. licensure Sterile gloves are put on before a sterile gown is True or False - False Critical thinking is an essential part o...