Molar bond enthalpy Samenvattingen, Aantekeningen en Examens
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RNAS C Practice Test Review 437 Questions with Verified Answers,100% CORRECT
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RNAS C Practice Test Review 437 Questions with Verified Answers 
 
A capacitor and resisitor in parallel - CORRECT ANSWER will have same voltage across since in parallel. 
if in series, voltage drops would occur 
 
they can be treated together 
 
If the absolute pressure of a gas is increased from 3 atm to 4 atm at constant volume, then the absolute temperature of the gas will increase by: 
A. 25%. 
B. 33%. 
C. 67%. 
D. 75% - CORRECT ANSWER B. Assuming the validity of the Ideal-Gas law, PV = n...
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100 Biochemistry Exam 1 Questions with correct answers. Graded A
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100 Biochemistry Exam 1 Questions with correct answers. Graded A 
Document Content and Description Below 
100 Biochemistry Exam 1 Questions with correct answers Which of the following is found in RNA but not DNA A) Uracil B) Guanine C) Deoxyribose D) Phosphate E) Adenine >>>>Uracil Which of the fo llowing amino acids exhibits significant ultraviolet absorption above 250 nm? A) Alanine B) Tyrosine C) Methonine D) Glycine E) All of the above >>>>Tyrosine Collagen fibers hav...
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HESI A2 CHEMISTRY-CHRISJAY FILES (1) (1)
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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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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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OCR A Level CHEMISTRY Exam with Guaranteed Correct Answers
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Test for carbonates - correct answer - add dilute HCL 
- it makes carbon dioxide 
test for carbon dioxide by bubbling it through lime water 
 
Test for ammonium ions - correct answer -add sodium hydroxide 
-warm the mixture 
-hover damp red litmus paper over it , if it turns blue the ions are present 
 
Test for sulphate ionz (SO4 2-) - correct answer - add dilute HCL 
- then add BaCl2 
- BaSO4 is made which is insoluble in water so a white precipitate will be formed 
 
Test for Halides (Cl-,...
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ACS Gen Chem 1 Exam 48 Questions with Verified Answers,100% CORRECT
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ACS Gen Chem 1 Exam 48 Questions with Verified Answers 
 
Ion - CORRECT ANSWER A species of an element in which the number of electrons does not equal the number of protons. 
 
Isotope - CORRECT ANSWER Each isotope of an atom has a different number of neutrons. 
 
Isoelectric - CORRECT ANSWER Two atoms with the same charge. 
 
Isotopic - CORRECT ANSWER Two atoms with the same number of neutrons. 
 
Transition Metal Orbitals - CORRECT ANSWER The 4s orbital is filled before the 3d orbital, but lis...
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AP CHEM FINAL EXAM | Complete Updated Answered Solution guide 2023.
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AP CHEM FINAL EXAM | Complete Updated Answered Solution guide 2023. 
 
6.1 For a classroom demonstration, a chemistry teacher puts samples of two different pure solid powders in a beaker. The teacher places the beaker on a small wooden board with a wet surface, then stirs the contents of the beaker. After a short time the students observe that the bottom of the beaker is frozen to the wood surface. The teacher asks the students to make a claim about the observation and to justify their claims. W...
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IB HL chemistry R1 terminology Exam | Questions & 100% Correct Answers (Verified) | Latest Update | Grade A+
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Thermochemistry 
: the study of energy changes that occur during chemical reactions and changes 
in state 
bond enthalpy 
: the energy needed to break one mole of bonds in gaseous molecules under 
standard conditions 
Molar enthalpy 
: The enthalpy change associated with a physical, chemical or nuclear change 
involving one mole of a substance. 
Kinetic energy 
: energy of motion of particles in a substance 
heat 
2 | P a g e 
: The energy transferred from one object to another 
Calorimetry ...
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ACS GEN CHEM 1 FINAL Exam 166 Questions with Verified Answers,100% CORRECT
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ACS GEN CHEM 1 FINAL Exam 166 Questions with Verified Answers 
 
The physical material of the universe. It is anything that has mass and occupies space. - CORRECT ANSWER Matter 
 
is made up of relatively few elements. - CORRECT ANSWER Matter 
 
The smallest building block of matter. Smallest particle that retains the chemical property of the element (O, He, S). - CORRECT ANSWER Atom 
 
Each _______ is made of the same kind of atom - CORRECT ANSWER Element 
 
Combination of atoms held together i...
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ACS Chemistry Final general Chem 1 Review 63 Questions with Verified Answers,100% CORRECT
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ACS Chemistry Final general Chem 1 Review 63 Questions with Verified Answers 
 
Density - CORRECT ANSWER mass / volume 
 
Conversion from celsius to kelvin - CORRECT ANSWER K = DegC + 273.15 
 
Conversion from DegF to DegC - CORRECT ANSWER DegC = (5/9) (DegF - 32) 
 
Conversion from DegC to DegF - CORRECT ANSWER DegF = (9/5)(DegC) + 32 
 
Intensive properties - CORRECT ANSWER Independent of amount of matter examined 
 
Extensive propertires - CORRECT ANSWER Dependent of amount of matter examined...