Ionic strength Study guides, Class notes & Summaries
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HESI A2 CHEMISTRY-CHRISJAY FILES (1) (1)
- Exam (elaborations) • 54 pages • 2023
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HESI A2 ENTRANCEEXAM 
FOR 
CHAMBERLAINCOLLGE 
OF NURSING 
2023 QUESTIONS WITH 
ANSWERS 
CHEMISTRY 
HESI A2 CHEMISTRY V1/V2 FILE 
1. If a Hydrogen isin a compound, what would its oxidation number be? 
+1 
2. What isthe oxidation number of any simple ion? 
+1 or -1 depending on the charge of the ion 
3. How many kilograms are in a pound? 
0. kg 
4. What is the temperature for freezing point of water in Celsius? 
0 degrees Celsius (32°F for Fahrenheit) 
5. What is the conversion of Celsius to Fah...
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Chem 162 Final 2023-2024 Exam (A+ Graded Already)
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Chemistry definition correct answers Study of structure, properties, transformations of matter 
 
Matter correct answers Anything that has mass + takes up space 
 
Phases: solid, liquid, gas 
 
Condensed phases = solids + liquids 
 
Intermolecular Forces (IMF) correct answers = Interactions between molecules/atoms/ions 
 
Solution correct answers = Homogenous mixtures of 2+ pure substances 
 
In a solution, the solute is dispersed uniformly throughout the solvent 
- Solute = compound(s) in lesse...
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GCE A LEVEL Chemistry A H432/03: Unified chemistry Mark Scheme for June 2022
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GCE A LEVEL Chemistry A H432/03: Unified chemistry Mark Scheme for June 2022. Structure and bonding 
NH3 is (simple) molecular/simple covalent/ 
/has intermolecular forces 
AND 
NH4NO3 is ionic 
Comparison of strength 
Ionic bonds are stronger than intermolecular bonds / 
forces between molecules 
OR 
Ionic bonds need more energy to break than 
intermolecular bonds 
2 AO1.1 
×2 
For intermolecular bonds/forces 
ALLOW hydrogen bonds 
OR London Forces/induced dipole 
forces/permanent dipo...
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CH 222 Test Bank Biochemistry Test 1 - Centennial College
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The dipole moment in a water molecule Which statement about hydrogen bonds is NOT 
true? 
A) Hydrogen bonds account for the anomalously high boiling point of water. 
B) In liquid water, the average water molecule forms hydrogen bonds with three to 
four other water molecules. 
C) Individual hydrogen bonds are much weaker than covalent bonds. 
D) Individual hydrogen bonds in liquid water exist for many seconds and sometimes 
for minutes. 
E) The strength of a hydrogen bond depends on the linearit...
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Chem 162 Final Exam Correctly Answered Questions| UpToDate | Already Graded A+
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Chemistry definition 
: Study of structure, properties, transformations of matter 
Matter 
: Anything that has mass + takes up space 
Phases: solid, liquid, gas 
Condensed phases = solids + liquids 
Intermolecular Forces (IMF) 
: = Interactions between molecules/atoms/ions 
Solution 
: = Homogenous mixtures of 2+ pure substances 
In a solution, the solute is dispersed uniformly throughout the solvent 
- Solute = compound(s) in lesser amount 
- Solvent = compound in greater amount 
2 | P a g e 
E...
And that's how you make extra money
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Chem 241 Chromatography Questions And Answers Latest Update
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What are the benefits of having smaller particles in HPLC? - correct answers high efficiency, higher plate number, higher pressure, shorter run time, better resolution due to uniform flow (reduced A-term, multiple pathway) 
 
what is plate height? - correct answers length of column required for 1 equilibration of solute between mobile and stationary phases 
 
What are the drawbacks of having smaller particles in HPLC? - correct answers lower detection limit, resistance to solvent flow, increased...
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ECIV 350 Test Problems Questions with Complete Solutions
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(Lecture 3-5) A water contains two nitrogen species. The concentration of NH3 is 30 mg/L NH3, and the concentration of NO3 - is 5 mg/L NO3 - . What is the total nitrogen concentration in units of mg N/L? Correct Answer-25.8 mg N/L 
 
(Lecture 3-5) What pH is required to reduce a high concentration of dissolved Mg2+ to 43 mg/L? Ksp for the following reaction is 10-11.16. Mg(OH)2(s) Mg2+ + 2OH Ksp = 10-11.16 Correct Answer-Ph=9.79 
 
(Lecture 3-5) How long will it take the carbon monoxide (CO) con...
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AQA GCSE Chemistry Exam Questions With 100% Correct Answers
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AQA GCSE Chemistry Exam Questions 
With 100% Correct Answers 
What is a compound? - answerwhen two or more elements react together 
What is an atoms? - answerthe smallest part of an element that can still be recognised as that 
element 
What is a molecule? - answerwhen atoms join together by chemical bonds 
What is an ion? - answera charged particle produced by the loss or gain of electrons 
How do the atoms of elements gain stable electronic structures? - answerjoining together by 
sharing elec...
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MRSO Exam - Questions and Answers (Complete Solutions)
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MRSO Exam - Questions and Answers (Complete Solutions) Which of the following are burn risks associated with an MRI if precautions are not taken? A. ECG B. Pulse oximeter C. Blood pressure D. ECG and pulse oximeter If a patient with a GFR of 15 has an MR ankle scan ordered with and without contrast and the technologist administers the contrast as ordered, who is at fault in the eyes of the court? A. Technologist B. Radiologist C. Ordering physician D. Patient What does gadolinium contrast medi...
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IB Chemistry Topic 5 Latest Update Graded A+
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IB Chemistry Topic 5 Latest Update 
 
Graded A+ 
 
Enthalpy The amount of heat released (exothermic) or absorbed (endothermic) during a 
chemical reaction (the energy needed for the reaction to occur) 
This can be lowered with the presence of a catalyst. 
 
Change in Enthalpy Hproducts -Hreactants 
 
Specific heat equation c= q in Joules (or Change in H)/mass(g)(change in temp) 
 
Specific heat of water 4.18 J/gdegreesC 
**NOTE: Usually in kJ 
 
Endothermic v. Exothermic Endothermic: Absorbing e...
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