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Which of these properties is the best one to use for identification of an element? the number of neutrons in the atomic nucleus the number of protons in the atomic nucleus the number of isotopes that are formed by the element the number of charges on ions of the element - ANSWERB. the number of protons in the atomic nucleus Which characteristic best identifies an Arrhenius base? It must donate electrons to form a covalent bond. It must accept protons from an acid. It must generate hydr...

What is a pure substance? - ANSWERsubstance made of one element What is a mixture? - ANSWERcombo of pure substances What is a homogenous substance - ANSWERevenly distributed particles at microscopic level Hetergenous - ANSWERparticles are not evenly distributed at the microscopic level - usually can see different particles What are chemical properties? - ANSWERCharges forming compounds reacts inert or not burning What are physical properties? - ANSWERState (solid, liquid, gas)...

Which hydrocarbon is 84.1% carbon by mass? (A) CH4 (B) C2H6 (C) C4H10 (D) C8H18 - ANSWER(D) C8H18 Lithium hydrogen carbonate, LiHCO3, decomposes when heated to form Li2O, CO2, and H2O. How many moles of H2O are formed when 0.50 mol LiHCO3 decomposes? (A) 0.25 mol (B) 0.50 mol (C) 0.75 mol (D) 1.0 mol - ANSWER(A) 0.25 mol A vessel contains 66 g CO2 and 16 g O2 at a pressure of 10.0 atm. What is the partial pressure of CO2? (A) 5.0 atm (B) 6.0 atm (C) 7.5 atm (D) 8.0 atm - ANSWER First...

Chemistry - ANSWERScience that deals with the structure and properties of substances and with the changes that they go through; how things are built and how we change them Inorganic chemistry - ANSWERChemistry of everything non-carbon containing Organic chemistry - ANSWERChemistry of carbon-containing compounds Biochemistry - ANSWERChemistry of living organisms Physical Chemistry - ANSWERStudy of physics applied to chemistry Analytical Chemistry - ANSWERStudy of the analysis techn...

Which of the following statements about the phases of matter is true? - ANSWERIn both solids and liquids, the atoms or molecules pack closely to one another. An atom that has lost an electron is... - ANSWERA cation Two or more substances in variable proportions, where the composition is inconsistent throughout are? - ANSWERA heterogeneous mixture Identify the charges of the protons,neutrons and electrons. - ANSWERProtons +1, neutrons 0, electrons -1 All of the following are SI base u...

If a substance reacts with oxygen, the chemical reaction is most likely a... - ANSWERcombustion reaction An unbalanced chemical equation for the reaction of boron fluoride with lithium sulfite is shown below. BF3 + Li2SO3 Right arrow. B2(SO3)3 + LiF What is the coefficient of lithium fluoride in the balanced chemical reaction? - ANSWER6 What is the percent by mass of water in Na2SO4 • 10H2O? - ANSWER55.92% Which equation is a decomposition reaction? - ANSWERLi2CO3 Right arrow. L...

Law of Conservation of Matter - ANSWERthere is no observable change in the quantity of matter during a chemical reaction or during a physical change Law of Conservation of Energy - ANSWERenergy cannot be created or destroyed in a chemical reaction or in a physical change. It can only be converted from one form to another Conservation of Matter and Energy - ANSWERthe combined amount of matter and energy available in the universe is fixed Fundamental unit of measurement for length - ANSWE...

Matter includes all of the following EXCEPT - ANSWERlight The study of essentially all substances containing carbon is - ANSWERorganic chemistry the melting of candle wax is classified as a physical change because it - ANSWERproduces no new substances Chemic properties - ANSWERinclude changes that alter the identity of a substance the state of matter in which a material has neither a definite shape nor a definite volume - ANSWERgaseous state The reaction of hydrogen with oxygen to...

EXAM BUNDLE Pharmacology Final(COMPLETE PACKAGE) Questions & Answers(RATED A+)EXAM BUNDLE Pharmacology Final(COMPLETE PACKAGE) Questions & Answers(RATED A+)EXAM BUNDLE Pharmacology Final(COMPLETE PACKAGE) Questions & Answers(RATED A+)EXAM BUNDLE Pharmacology Final(COMPLETE PACKAGE) Questions & Answers(RATED A+)EXAM BUNDLE Pharmacology Final(COMPLET

Avoidance of aspirin use in children is important due to the possible development of - ANSWER Reye's Syndrome Drugs that can increase the QT interval are especially dangerous because they can put a patient at risk of developing - ANSWER Dysrythmia What is the correct order of absorption from most rapid to least rapid? - ANSWER IV, IM, SC, PO Drug absorption is BEST defined as - ANSWER Entry of drug molecules into the blood stream Albuterol activates beta-1 receptors in the lungs thu...