Repulsion - Study guides, Study notes & Summaries
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ETA Exam QUESTIONS AND ANSWERS
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Electrostatic Discharge - Answer- What does the acronym ESD stand for? 
 
100mA, 200mA - Answer- Current amounts between __ and __ can be lethal. 
 
Shock - Answer- What is the number one concern in regards to electrical safety? 
 
Protons, neutrons, electrons - Answer- Bohr's Atomic Model consists of what three components? 
 
Shells - Answer- Electrons are arranged in __ around the nucleus. 
 
Conductors, semi-conductors, and insulators - Answer- What are three types of materials used in elect...
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ENCN221 Exam Questions & Answers 2024/2025
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ENCN221 Exam Questions & Answers 2024/2025 
 
 
properties valence electrons determine - ANSWERSchemical electrical thermal optical, and contribute to bonding in solids 
 
electronegativity - ANSWERSthe ability of an atom to gain or lose an electron 
 
behaviour of repulsive and attractive forces with distance - ANSWERSattraction increases with distance, repulsion also increases. repulsion increases and decreases more quickly so there is a point where the forces balance 
 
what is elastic modulu...
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Test Bank for Organic Chemistry 3rd Edition by Klein
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Test Bank for Organic Chemistry 3rd Edition by KleinChemical reactions occur as a result of __________ A. the attraction between opposite charges. B. the nucleus–nucleus interactions. C. the motion of electrons. D. like atoms interacting. E. combining two chemicals.Chemical reactions occur as a result of __________ A. the attraction between opposite charges. B. the nucleus–nucleus interactions. C. the motion of electrons. D. like atoms interacting. E. combining two chemicalsWhat is the diffe...
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IB Chemistry SL: Topic 4 Latest Version Graded A
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IB Chemistry SL: Topic 4 Latest Version 
 
Graded A 
 
Ionic Bond Electrostatic attraction between oppositely charged ions 
 
Covalent Bond Electrostatic attraction between a pair of electrons and positively charged 
nuclei, formed as a result of electron sharing 
 
Metallic Bond Electrostatic attraction between a lattice of positive ions and delocalized 
electrons 
 
Polyatomic ions ions with more than one element 
 
e.g. CaCO3, Al(OH)3, Mg(NO3)2, (NH4)2SO4, Ba3PO4, LiHCO3 
 
Lattice ions arran...
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ACS BIOCHEMISTRY EXAM Questions and Answers
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Henderson-Hasselbach Equation 
Ans- pH = pKa + log ([A-] / [HA]) 
FMOC Chemical Synthesis 
Ans- Used in synthesis of a growing amino acid chain to a polystyrene bead. 
FMOC is used as a protecting group on the N-terminus. 
Salting Out (Purification) 
Ans- Changes soluble protein to solid precipitate. Protein precipitates when 
the charges on the protein match the charges in the solution. 
Size-Exclusion Chromatography 
Ans- Separates sample based on size with smaller molecules eluting later. 
...
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ACS BIOCHEMISTRY EXAM Questions and Answers
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Henderson-Hasselbach Equation 
Ans- pH = pKa + log ([A-] / [HA]) 
Salting Out (Purification) 
Ans- Changes soluble protein to solid precipitate. Protein precipitates when 
the charges on the protein match the charges in the solution. 
Size-Exclusion Chromatography 
Ans- Separates sample based on size with smaller molecules eluting later. 
Ion-Exchange Chromatography 
Ans- Separates sample based on charge. CM attracts +, DEAE attracts -. May 
have repulsion effect on like charges. Salt or acid ...
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ACS BIOCHEMISTRY EXAM Questions and Answers
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Henderson-Hasselbach Equation 
Ans- pH = pKa + log ([A-] / [HA]) 
Salting Out (Purification) 
Ans- Changes soluble protein to solid precipitate. Protein precipitates when 
the charges on the protein match the charges in the solution. 
Size-Exclusion Chromatography 
Ans- Separates sample based on size with smaller molecules eluting later. 
Ion-Exchange Chromatography 
Ans- Separates sample based on charge. CM attracts +, DEAE attracts -. May 
have repulsion effect on like charges. Salt or acid ...
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ACS BIOCHEMISTRY EXAM UPDATE 2023&2024 GRADED A+ 100% ACCURATE
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ACS BIOCHEMISTRY EXAM UPDATE 2023&2024 GRADED A+ 100% ACCURATE 
Henderson-Hasselbach Equation - ANSWER pH = pKa + log ([A-] / [HA]) 
 
FMOC Chemical Synthesis - ANSWER Used in synthesis of a growing amino acid chain to a polystyrene bead. FMOC is used as a protecting group on the N-terminus. 
 
Salting Out (Purification) - ANSWER Changes soluble protein to solid precipitate. Protein precipitates when the charges on the protein match the charges in the solution. 
 
Size-Exclusion Chromatography -...
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CETa Practice -Test Questions And Answers Rated A+ New Update Assured Satisfaction
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Bohr's Atomic Model consists of what three components? 
A. 
Neutrons, ion, neutrinos 
B. 
Protons, neutrons and cations 
C. 
Tachyons gravitons and electrons 
D. 
Protons, neutrons and electrons - D. 
Protons, neutrons and electrons 
What does LEC stand for? 
A. 
Local exchange carrier 
B. 
Local essential channel 
C. 
Local effective communication 
D. 
Local exchange circuit - A. 
Local exchange carrier 
Current amounts between ______ and _____ can be lethal. 
A. 
100mA, 200mAB. 
10mA, 33.3mA ...
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ACS BIOCHEMISTRY EXAM Questions and Answers
- Exam (elaborations) • 42 pages • 2024
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- R242,48
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Henderson-Hasselbach Equation 
Ans- pH = pKa + log ([A-] / [HA]) 
Salting Out (Purification) 
Ans- Changes soluble protein to solid precipitate. Protein precipitates when 
the charges on the protein match the charges in the solution. 
Size-Exclusion Chromatography 
Ans- Separates sample based on size with smaller molecules eluting later. 
Ion-Exchange Chromatography 
Ans- Separates sample based on charge. CM attracts +, DEAE attracts -. May 
have repulsion effect on like charges. Salt or acid ...
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