Halogens - Study guides, Class notes & Summaries

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Disinfection, desiccation, filtration, fridge, heat, radiation, and Sterilization correct answers Types of sterilization/inhibition techniques denatures proteins 15 lbs ,121*C for 15 mins correct answers Moist Heat Sterilization kills by oxidation hot air oven 170*C for 2 hrs correct answers dry heat sterilization 140*C for 3 secs, NOT STERILIZATION correct answers pasturization sterilization Damages cytoplasmic membrane and denatures protein correct answers Disinfectant: Pheno...

URI CHM 103 EXAM 1 LATEST UPDATE GRADED A+ **What is density?** Density is calculated as mass divided by volume. **How do you calculate percent error?** Percent Error = ((Theory - Actual) / Theory) × 100% **What does percent accuracy measure?** Percent Accuracy = (Actual / Theory) × 100% **Which elements are halogens?** Halogens include F, Cl, Br, I, and At. **Define molecular weight.** Molecular Weight is the sum of atomic weights. **What is the formula for calculating atomic...

Things to Memorize for IB Chem HL 100% Correct Percentage Yeild actual yield/theoretical yield x 100 Avogadro's Law for gases One mole of any gas occupies 22.7 L at STP Ideal Gas Law PV=nRT (n is equal to the number of moles of the substance and R is the gas constant 0.082 or 8.314) Molarity equation moles of solute/liters of solution Dilution M1V1=M2V2 Hydrogen Emission Spectrum Color lines indicate the wavelengths of light that are released Balmer series A set of spec...

What is an atom? - Answer Smallest part of an element that can exist What is an element? - Answer A substance made up of one type of atom How are elements represented? - Answer Using symbols, in the periodic table Approximately how many elements are there? - Answer 100 What is a compound? - Answer A substance made up of two or more elements chemically combined in fixed proportions How are the elements in a compound separated? - Answer By chemical reaction How are ch...

Items that are introduced directly into the bloodstream or other normally sterile areas of the body are classified as ~ Critical items The process by which all forms of microorganism are completely destroyed is called ~ Sterilization Iodophors are a member of this disinfectant family ~ Halogens Phenolic are classified as ~ Intermediate to low-level disinfection How long must alcohol remain in wet contact with an item to achieve a reasonable level of disinfection ~ 5 minutes Which o...

Mixture with uniform density throughout and no distinguishable coponents.Answer - Homogeneous Mixture Mixture in which the components are readily distinguished.Answer - Heterogeneous Mixture A change in which the checmical composition of a substance remains the same.Answer - Physical Change A change in which the chemical bonds are broken and reformed to create a new and different substance.Answer - Chemical Change The simplest of substances and is represented by a specific letter...

Disinfection - destruction of vegetative pathogens; usually on inanimate objects. Antiseptic - agent which prevents bact. contamination and growth; usually on living tissue. Which agent doesn't necessarily work better at higher concentrations? - Alcohol, 70% (goldie lock zone)(60-80% most effective) (Ethyl and Isopropyl) -Alcohol is very effective to resistant to inactivation by organic materials (halogens are not good at this) Name the factors that affect a disinfectant activity. - -Cont...

CRCST Final Exam Questions and Answers 100% CorrectCRCST Final Exam Questions and Answers 100% CorrectCRCST Final Exam Questions and Answers 100% CorrectCRCST Final Exam Questions and Answers 100% CorrectCRCST Final Exam Questions and Answers 100% CorrectCRCST Final Exam Questions and Answers 100% Correct A patient experiencing neuralgia is - ANSWER-Having nerve pain Which of the following packaging materials is not acceptable for use in steam sterilization? - ANSWER-Spunbond polyolefin comb...

General Properties of Organic Compounds - correct answer - Melt and boil at lower temperatures - As # C's and the MW increase, BP/MP increase - Flammable, unstable, especially triple bonds - Triple bonds can: Polymerize, Spontaneously react with, Oxygen, Explode. Keep triple bonds away from: Heat & Oxygen/Oxidizers - Presence of halogens increases stability - Many are water in-soluble i.e. they sink such as CCl4, MeCl2, PCBs etc - Some are polar if they contain hetero oxygen atom such ...