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Exam 1: CHEM 120/ CHEM120 (2026/ 2027 Update) Introduction to General, Organic, and Biological Chemistry with Lab Review| Questions & Answer | Grade A| 100% Correct (Accurate Solutions)-Chamberlain.
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…..DLDD Exam 1: CHEM 120/ CHEM120 (2026/ 2027 Update) Introduction to General, Organic, and Biological Chemistry with Lab Review| Questions & Answer | Grade A| 100% Correct (Accurate Solutions)-Chamberlain. Q. What is the correct scientific notation for 200,000? Answer 2 x 10*5 Q. What is the correct scientific notation for 10000? Answer 1 x 10*4 Q. What is the meaning of 4.32 x 10-2? Answer 0.043*2 Q. What is the meaning of 4.32 x 103? Answer 4320 Q. Arra...
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CHEM 120 – Introduction to General, Organic & Biological Chemistry Lab Practicum –Exam Questions with Verified Answers and Rationales LATEST UPDATE
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This document contains lab practicum exam questions with verified answers and rationales for CHEM 120: Introduction to General, Organic, and Biological Chemistry. The material reviews key laboratory concepts including chemical measurements, solution preparation, acid–base reactions, organic functional groups, and biochemical principles. It is designed to help students prepare for chemistry laboratory practical exams by reinforcing experimental techniques, data interpretation, and core chemica...
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Chem 120 Review Quiz #3 & Chamberlain Exam 3 – Complete Questions and Answers
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1. If an atom loses electrons in a redox reaction, we say this atom was: a. an oxidizing agent b. oxidized c. reduced d. none of the above - Correct Answer:>>> Oxidized 2. In the reaction CrO + H2 -> H2O + Cr a. Cr b. H c. O d. all elements are oxidized - Correct Answer:>>> Cr 3. What is the oxidizing agent in the reaction Fe3+ + V -> Fe + V3+ a. V b. Fe3+ c. Fe d. V3+ - Correct Answer:>>> Fe3+ 4. Which of the following molecules is not a hydrocarb...
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CHEM 120 Final Exam Prep – 100% Verified Questions & Answers
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Formal charge - Answer:>>> number of valence electrons-number of counts counts: one line or one dot less or no formal charge more stable electronegativity - Answer:>>> attraction for electrons electrons not shared equally increases to fluorine nonpolar:0-.4 polar: .4-2.0 ionic: >2.0 bond order - Answer:>>> (number of bonding electrons-number of antibonding electrons)/2 hybridization - Answer:>>> # of e⁻ groups=# or unhybrids to combine=# of h...
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CHEM 120 – Chamberlain Exam 1 (Practice Test, 100 Questions & Answers) – Redesigned Edition
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Which subatomic particle has a negative charge? a) Proton b) Neutron c) Electron Correct Answer:>>> d) Positron The nucleus of an atom contains: a) Protons only b) Neutrons only c) Protons and neutrons Correct Answer:>>> d) Protons and electrons Which has the smallest mass? a) Proton b) Neutron c) Electron Correct Answer:>>> d) They are all equal
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CHEM 120 Yang Exam 2 – Complete Study and Practice Q&A
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1. 4 electron groups geometry & angle - Answer:>>> tetrahedral 109.5 2. 3 bonding & 1 lone pair geometry (angle) - Answer:>>> trigonal pyramidal (<109.5) 3. 2 bonding & 2 lone pair geometry (angle) - Answer:>>> bent (<<109.5) 4. 5 electron group geometry & angle - Answer:>>> trigonal bipyramidal 120 90 5. 4 bonding & 1 lone geometry (angle) - Answer:>>> seesaw (<120 <90) 6. 3 bonding & 2 lone geometry (angle) - Answer:>>&gt...
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CHEM 120 Exam 2 (Yang) – Latest Edition with Verified Questions & Answers
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1. the _____ the molar mass, the more likely the compound will be a liquid or solid - Answer:>>> higher 2. the attraction of the negative end of a polar molecule with the positive end of another polar molecule - Answer:>>> dipole dipole attraction 3. for 2 molecules w/ similar size, a _____ one will be more likely to be a solid or liquid - Answer:>>> polar 4. how do you know if something is dipole-dipole? - Answer:>>> if it's polar 5. in a hydrogen ...
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CHEM 120 Exam #3 – Latest Edition, Verified Questions with A+ Graded Answers
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Electrostatic interaction - Answer:>>> an attraction or repulsion that occurs between charges molecules solid - Answer:>>> the physical state characterized by a dominance of potential energy (cohesive force) and kinetic energy (disruptive force) liquid - Answer:>>> the physical state characterized by potential energy (attractive force) and kinetic energy (repulsive force) of about the same magnitude gas - Answer:>>> the physical state characterized by a...
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CHEM 120 Exam 3 – Practice Test with 118 Updated Questions and Answers
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What are the molar concentrations of Na+ ions and Cl-ions in a 1.0 M aqueous solution of NaCl? - Answer:>>>  1 M NaCl  1 M Na+  ! M ClWhat are the molar concentrations of Na+ ions and SO42-ions in a 1.0 M aqueous solution of Na2SO4? - Answer:>>>  1 M Na2SO4  2 M Na +  1 M SO4 2- How to prepare 1.00 L of a 0.200 M K2Cr2O7 (potassium dichromate) solution? 1. - Answer:>>> 1.Add 58.8 g K2Cr2O7 to 1.00 L volumetric flask− 2.Add enough water ...
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CHEM 120 Exam Three – Verified Questions & Answers, 2025/2026 Entry
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What is a chemical bond according to valence bond theory? - Answer:>>> According to the valence bond theory, a chemical bond results from the overlap of two half-filled orbitals with spin-pairing of the two valence electrons. In valence bond theory, the interaction energy between the electrons and nucleus of one atom with the electrons and nucleus of another atom is usually negative when ______________. - Answer:>>> In valence bond theory, the interaction energy is usuall...
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