Diatomic - Study guides, Class notes & Summaries
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CHEM101 Graded Exam 2Topic 9: Energy Changes in Chemical Reactions FALL 2023 Straighterline
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Potassium chlorate (used in fireworks, flares, and safety matches) forms oxygen and 
potassium chloride when heated. 
KClO3(s) → KCl(s) + O2(g) [unbalanced] 
What mass of oxygen gas is formed if 26.4 g of potassium chlorate decomposes 
completely? 
Select one: 
A. 6.86 g 
B. 99.1 g 
C. 4.60 g 
D. 10.3 g 
E. 223 g 
My Account 
Question 2 
Correct 
5.00 points out 
of 5.00 
Question 3 
Correct 
5.00 points out 
of 5.00 
Ammonia reacts with diatomic oxygen to form nitric oxide and water vapor as ...
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Chemistry 101 Final Ivy Tech Questions With Complete Solution | 2024
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Chemistry 101 Final Ivy Tech Questions With Complete 
Solution | 2024 
Diatomic O2 can react with the element magnesium to form magnesium oxide (MgO). The 
balanced chemical equation is: 
O2 + Mg ⟶ 2 MgO 
If 4 moles of magnesium totally reacted with more than enough O2, how many moles of 
MgO would be expected to form? 
A. 8 Moles 
B. 2 Moles 
C. 4 Moles 
D. 1 Mole 
E. Not Enough Info - - C 
Which of the following is TRUE? 
A. Stoichiometry allows prediction of how much of the reactants are ne...
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Chemistry Exam 1 Practice Questions With 100% Verified Answers
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Chemistry Exam 1 Practice Questions With 
100% Verified Answers 
_____ do not form Ions - answerNoble Gases 
A tentative explanation to an observation is a _______ - answerHypothesis 
The metric unit for volume is - answercubic meter (m^3) 
The metric unit for density is - answerkg/m^3 
The conversion factor for meters to micrometers is - answer10^6 micrometers/1m 
1m = ____ cm? - answer100 cm 
Matter is - answermade up of atoms and molecules 
An element is - answera single type of atom 
A molec...
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LSU ENVS 1126 UPDATED Exam Questions and CORRECT Answers
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Soil erosion and soil degradation - Her property taxes have decreased because her 
property value has decreased because her house was falling off into the gulf and she was 
pouring salt water to water her plants 
Does makes the poison - Water can be a poison is an example of this toxicology phrase 
Food web - Nutrient cycle for living things in an ecosystem is called 
O3 - Dangerous in Troposphere but reduce cancer in stratosphere 
C.) Nitrification - The majority of the air we breathe is comp...
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HESI A2 Chemistry Questions with Answers and Explanations UPDATED
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HESI A2 Chemistry Questions with 
Answers and Explanations 
UPDATED 
1. Which of the following substances allows for the fastest diffusion? 
A. gas 
B. solid 
C. liquid 
D. plasma 
Explanation: Diffusion is fastest through gases. The next fastest medium for diffusion is liquid, 
followed by plasma, and then solids. In chemistry, diffusion is defined as the movement of 
matter by the random motions of molecules. In a gas or a liquid, the molecules are in perpetual 
motion. For instance, in a quan...
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HESI A2 CHEMISTRY 2023- 2024 ALL 25 QUESTIONS WITH ANSWERS AND RATIONALES LATEST UPDATES 100% VERIFIED ANSWERS WITH EXPLANATION.
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HESI A2 CHEMISTRY 2023- 
2024 ALL 25 QUESTIONS 
WITH ANSWERS AND 
RATIONALES LATEST UPDATES 100% 
VERIFIED ANSWERS WITH EXPLANATION. 
1. Which of the following substances allows for the fastest diffusion? 
A. gas 
B. solid 
C. liquid 
D. plasma 
Explanation: Diffusion is fastest through gases. The next fastest medium for diffusion is liquid, 
followed by plasma, and then solids. In chemistry, diffusion is defined as the movement of 
matter by the random motions of molecules. In a gas or...
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Chemistry 101 Final Ivy Tech | Questions and Correct Answers | Latest Update 2024/2025
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Chemistry 101 Final Ivy Tech | 
Questions and Correct 
Answers | Latest Update 
2024/2025 
Diatomic O2 can react with the element magnesium to form 
magnesium oxide (MgO). The balanced chemical equation is: 
O2 + Mg ⟶ 2 MgO 
If 4 moles of magnesium totally reacted with more than enough O2, 
how many moles of MgO would be expected to form? 
A. 8 Moles 
B. 2 Moles 
C. 4 Moles 
D. 1 Mole 
E. Not Enough Info - Answer -CWhich of the following is TRUE? 
A. Stoichiometry allows prediction of how much...
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CEM 141 MSU Final Exam All Possible Questions and Answers with complete solution
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Yes because it can be tested and answered though observations and experiments - Consider the 
question: Is there an attractive force between a pencil and the earth? 
Is this a scientific question? [Yes or No] 
Because 
III. It can be tested and answered through observations and experiments 
IV. The answer is already known and we find it online 
V. There is no way to design an experiment to answer this question. 
Atoms are mostly empty space 
Atoms are in constant motion - Which of the following ...
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BONDING IN SOME HOMONUCLEAR DIATOMIC MOLECULES (1)
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BONDING IN SOME HOMONUCLEAR DIATOMIC MOLECULES (1)
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ABO Practice Test (Answered) With Complete Verified Solution.
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ABO Practice Test (Answered) With Complete Verified Solution. 
 
To mount a lens in a nylon suspension type frame, it would be necessary to _______ the lens. 
 
a) Drill 
b) Notch 
c) Groove 
d) V-Bevel 
c) Groove 
The optical center of a lens is: 
 
a) At the geometrical center 
b) One the 180 line 
c) At the point where the "a" and "b" measurement meet 
d) A lens location of zero deviation of the optical axis 
d) A lens location of zero deviation of the optical axis 
The progressive power ...
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