Hydrogen bonds Study guides, Class notes & Summaries
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CLEP chemistry questions with correct answers
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The attractions between atoms within a molecule of NH3 are best characterized as 
A. hydrogen bonds 
B. ionic bonds 
C. polar covalent bonds 
D. London (dispersion) forces 
E. ion-dipole forces Correct Answer-polar covalent bonds 
 
R(g) + 2T(g) ⇌ 2X(g) + Z(g) 
 
The reaction mixture above is at equilibrium at 298 K. The value of the equilibrium constant for the reaction is 16 at 298K. If R(g) , X(g) and Z(g) each have an equilibrium concentration of 2.0 M, what is the equilibrium concentrati...
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PSI Cosmetology Theory Exam 2023 Questions and Answers
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Soft Water/ Rain water - Answer- Best for shampooing and allows shampoo to lather freely 
 
Hard Water - Answer- Minerals that lessen the ability of the shampoo to lather 
 
Purified water/Deionized water - Answer- Main ingredient in shampoo 
 
Surfactant - Answer- has two ends the HYDROPHILIC HEAD and LIPOPHILIC TAIL 
 
Hydrophilic Head - Answer- Attracted to water 
 
Lipophilic Tail - Answer- Attracted to dirts and oils 
 
Acid Balanced Shampoo - Answer- pH of 4.5-5.5 
 
Jheri Redding - Answer...
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ACS BIOCHEMISTRY EXAM QUESTION WITH COMPLETE SOLUTIONS LATEST 2024.
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ACS BIOCHEMISTRY EXAM QUESTION WITH COMPLETE SOLUTIONS LATEST 2024. 
Henderson-Hasselbach Equation - CORRECT ANSWER - pH = pKa + log ([A-] / [HA]) 
FMOC Chemical Synthesis - CORRECT ANSWER - Used in synthesis of a growing 
amino acid chain to a polystyrene bead. FMOC is used as a protecting group on the Nterminus. 
Salting Out (Purification) - CORRECT ANSWER - Changes soluble protein to solid 
precipitate. Protein precipitates when the charges on the protein match the charges in 
the solution. 
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OCR 2023 Chemistry A H432/03: Unified chemistry A Level Question Paper & Mark Scheme (Merged)
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OCR 2023 
Chemistry A 
H432/03: Unified chemistry 
A Level 
Question Paper & Mark Scheme 
(Merged) 
Please Review and leave your Rating 
stars…. 
Please write clearly in black ink. Do not write in the barcodes. 
Centre number Candidate number 
First name(s) 
Last name 
Oxford Cambridge and RSA 
Friday 23 June 2023 – Morning 
A Level Chemistry A 
H432/03 Unified chemistry 
Time allowed: 1 hour 30 minutes 
INSTRUCTIONS 
• Use black ink. You can use an HB pencil, but only for graphs and dia...
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Test Bank For Organic Chemistry 9th Edition by John E. McMurry
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Chapter 01 - Structure and Bonding 
1. Give the ground-state electron configuration for carbon (atomic number 6). 
1s22s22px12py1 or 1s22s22p2 
2. Give the ground-state electron configuration for fluorine (atomic number 9). 
ANSWER: 
POINTS: 1 
1s22s22px2 2py2 2pz1 or 1s22s22p5 
3. Give the ground-state electron configuration for magnesium (atomic number 12). 
1s22s22p63s2 
4. How many electrons does silicon have in its valence shell? 
ANSWER: four POINTS: 1 
Exhibit 1-1 
Write valid Lewis (elec...
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Portage Learning: Microbiology Final Exam Set Already Passed
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Portage Learning: Microbiology Final Exam Set Already Passed Microbiology is the study of what? Microbiology is the study of microbes (microorganisms and viruses) and their biological processes. 
What is the smallest biological unit of life? A cell 
What is a macromolecule? A macromolecule is classified as a complex molecule that is composed from smaller subunits. 
What are the four main types of macromolecules? Proteins, nucleic acids, lipids and carbohydrates 
What various functions do protein...
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BLG1501 Assignment 2 Semester 1 2024 (Solutions)
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BLG1501 Assignment 2 Semester 1 2024 (Solutions) 
 
Question 1 
Not yet answered 
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Question text 
Hydrolysis is reaction which occurs when 
Select one: 
a. 
a bond of a polymer is broken down through the addition of water molecule. 
b. 
two molecules are covalently bonded to each other through the loss of water. 
c. 
a double bond is formed between two atoms. 
d. 
a triple bond is formed between two atoms. 
Clear my choice 
Question 2 
Not yet answered 
Marked o...
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CPPS 403 Pre-Midterm exam 2023 with 100% correct answers
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Central Dogma - correct answerDNA-(Transcription) - RNA- (Translation) -Protein 
 
DNA Structure - correct answer1. Deoxyribose: 5 Carbon atoms are numbered 1' to 5' . Hydrogen attached to 2'. Sugar 
2. Phosphate group 
Sugar-Phosphate backbone is asymmetric because PO4 groups connect the C5' of a sugar with the C3' of neighbouring sugar. = Asymmetric ends because the C5' end is attached to a PO4 and the C3' end is simply a hydroxyl group of the sugar. 
3. Nucleic Acid: No-covalently bon...
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TEST BANK FOR PATHOPHYSIOLOGY: THE BIOLOGIC BASIS FOR DISEASE IN ADULTS AND CHILDREN 7TH EDITION BY KATHRYN L. MCCANCE
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TABLE OF CONTENTS 
PART ONE: CENTRAL CONCEPTS OF PATHOPHYSIOLOGY: CELLS 
AND TISSUES 
Unit I: The Cell 
1. Cellular Biology 
2. Altered Cellular and Tissue Biology 
3. The Cellular Environment: Fluids and Electrolytes, Acids and Bases 
Unit II: Genes and Gene-Environment Interaction 
4. Genes and Genetic Diseases 
5. Genes, Environment-Lifestyle, and Common Diseases 
6. Epigenetics and Disease 
Unit III: Mechanisms of Self-Defense 
7. Innate Immunity: Inflammation 
8. Adaptive Immunity 
9. Alter...
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Biology 1610 FINAL USU Questions And Answers 2023
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The most common isotope of hydrogen has one proton, no neutrons, and one electron. An isotope of hydrogen with 1 neutron would have: - Answer- an atomic number of 1 and a mass number of 2 
 
In a covalent bond: - Answer- electrons are shared between atoms so that all atoms have full outer shells 
 
A property of a system that is present at one level of organization but absent at the levels below is called: - Answer- an emergent property 
 
An ionic bond is - Answer- weaker than a covalent bond 
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