Hydrogen bonds Study guides, Class notes & Summaries
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BCH4024 Exam 1 Purich Questions & Answers 2023/2024
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BCH4024 Exam 1 Purich Questions & Answers 2023/2024 
 
Basic Structure of water - ANSWER--large dipole moment 
-very polar that interactions between H2O molecules are strong--high heat capacity 
-liquid water=H-bonds are relentlessly made and broken; thus a flickering collection of W5 structures, with extremely little W1 
-each water molecule can form up to 4 H-bonds 
-liquid water has 3.4 H-bonds on average 
-ice has 4 H-bonds 
 
H-bond - ANSWER-stable interaction occurring when 2 EN atoms shar...
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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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OCR AS LEVEL CHEMISTRY A H032/01 BREADTH IN CHEMISTRY ORIGINAL 2024 EXAM 100 % COMPLETE QUESTIONS AND ANSWERS A+ SCORE GUARANTEED.CHECK THE LAST PAGE FOR ANSWERS.
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OCR AS LEVEL CHEMISTRY A H032/01 BREADTH IN CHEMISTRY 
 ORIGINAL 2024 EXAM 100 % COMPLETE QUESTIONS AND ANSWERS 
A+ SCORE GUARANTEED.CHECK THE LAST PAGE FOR ANSWERS. 
1	Which substance contains polar molecules? 
 
A	C2H4 
B	CO2 
C	NCl 3 
D	SF6 
Your answer	 	[1] 
 
 
2	What is the formula of silver carbonate? 
 
A	AgCO3 
B	Ag(CO3)2 
C	Ag2CO3 
D	Ag3CO3 
Your answer	 	[1] 
 
 
3	Which statement explains why ice is less dense than water? 
 
A	Hydrogen bonds are stronger in ice than in water. 
 
B	H...
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PAX Prep NLN Verbal Comprehension Passages
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PAX Prep NLN Verbal Comprehension Passages 
 
 
The way Things Work 
It was the ancient Greeks who first had the idea that everything is made up of elements. They conjured up just four of them-earth, fire, wind and water. As it turned out, the idea was right but the elements were wrong. Modern elements are less evocative but more numerous. They make up just over one hundred basic substances. Some are commonplace, like hydrogen, oxygen, iron and carbon; others are rare and precious, such as mercu...
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AQA AS CHEMISTRY 7404/2 Paper 2 Organic and Physical Chemistry Question Paper + Mark scheme [MERGED] June 2022 *JUN227404201* IB/M/Jun22/E7 7404/2 For Examiner’s Use Question Mark 1
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AQA 
AS 
CHEMISTRY 
7404/2 
Paper 2 Organic and Physical Chemistry 
Question Paper + Mark scheme [MERGED] 
June 2022 
*JUN* 
IB/M/Jun22/E7 7404/2 
For Examiner’s Use 
Question Mark 
1 
2 
3 
4 
5 
6 
7 
Section B 
TOTAL 
Time allowed: 1 hour 30 minutes 
Materials 
For this paper you must have: 
• the Periodic Table/Data Sheet, provided as an insert (enclosed) 
• a ruler with millimetre measurements 
• a scientific calculator, which you are expected to use where appropriate. 
Instructions...
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Test Bank for McCance & Huether’s Pathophysiology: The Biologic Basis for Disease in Adults and Children 9th Edition by Julia Rogers
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Test Bank for McCance & Huether’s Pathophysiology: The Biologic Basis for Disease in Adults and Children 9th Edition by Julia Rogers 
Which component of the cell prodNuUceRsSIhNyGdTroBg.CeOnMperoxide (H2O2) by using oxygen toremove hydrogen atoms from specific substrates in an oxidative reaction? 
a. Lysosomes c. Ribosomes 
b. Peroxisomes d. Oxyhydrosomes 
ANS: B 
Peroxisomes are so named because they usually contain enzymes that use oxygen toremove hydrogen atoms from specific substrates in a...
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SEMMELWEIS ENTRANCE MEDICINE BIOLOGY EXAM | QUESTIONS & 100% CORRECT ANSWERS (VERIFIED) | LATEST UPDATE | GRADEA+
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SEMMELWEIS ENTRANCE MEDICINE 
BIOLOGY EXAM | QUESTIONS & 100% 
CORRECT ANSWERS (VERIFIED) | LATEST 
UPDATE | GRADEA+ 
What are carbohydrates and lipids? 
Correct Answer: Organic compounds that are mostly composed of three types of 
atom; carbon, hydrogen and oxygen 
What do carbohydrates do? 
Correct Answer: provide energy, in the form of sugars like glucose and fructose, but 
they also make up structures like cellulose, which form the cell wall of plant cells 
What type of carbohydrate is...
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TEST BANK for PATHOPHYSIOLOGY The Biologic Basis For Disease In Adults And Children 8 TH EDITION BY KATHRYN L. MCCANCE
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Peroxisomes are so named because they usually contain enzymes that use oxygen to remove 
hydrogen atoms from specific substrates in an oxidative reaction that produces H2O2, which is 
a powerful oxidant and potentially destructive if it accumulates or escapes from peroxisomes. 
Ribosomes are RNA-protein complexes (nucleoproteins) that are synthesized in the nucleolus 
and secreted into the cytoplasm through pores in the nuclear envelope called nuclear pore 
complexes. Lysosomes are saclike s...
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Test Bank For Lehninger Principles of Biochemistry 6th Edition By Favid L. Nelson, Micheal M. Cox| All Chapters| Complete Questions and Answers (LATEST VERSION).
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Test Bank For Lehninger Principles of Biochemistry 6th Edition By Favid L. Nelson, Micheal M. Cox| All Chapters| Complete Questions and Answers (LATEST VERSION). 
Chapter Chapter 1 1 The Foundations Foundations of of Biochemistry Biochemistry 
Multiple Choice Questions 
1. Cellular foundations Cellular foundations 
Pages: 33-4 DDiffffiicculttyy: 11 Anns: : CC 
In a bacterial cell, the DNA is in the: 
A) cell envelope. 
B) cell membrane. cell membrane. 
C) nucleoid. 
D) nucleus. 
E) ribosomes. ri...
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WGU C190 Intro to Bio - Exam Practice Questions | 115 Questions with 100% Correct Answers | Verified | Latest Update
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Water molecules binding to each other is called _______; water molecules binding to other 
molecules is called _______. - Cohesion; adhesion 
Water molecules form hydrogen bonds because water is - Polar 
Water can bind to the walls of these cells because they are _____ When water binds to the walls 
of the cells, this is called ________ - Polar; adhesion 
Water molecules within these cells will also bind to each other. What is this called? - 
Cohesion 
Dissolving sugar in water makes a _______. ...
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