Subscripts - Study guides, Class notes & Summaries
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Chemistry Test Molar Mass exam with 100% Correct answers already graded A+
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Define: Avogadro's number 
6.023x 10^23 
One mole of a pure substance 
 
 
 
Define: Empirical Formula 
elements combined in a compound with subscripts showing the smallest whole-number mole ratio 
 
 
 
Define: Molecular formula 
a formula showing the types and numbers of atoms combined in a single molecule of a molecular compound 
 
 
 
Define: Formula mass 
the sum of the average atomic masses of all the atoms represented in the formula of any molecule, formula unit, or ion 
 
 
 
Define: Mo...
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ACS Chemistry 131 FINAL EXAM 2023 WITH 100% CORRECT ANSWERS
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Atomic Structures - correct answer Know all the problems except #7,14,15 
 
When looking at the atomic structure what does the left-hand subscript represent - correct answer Left hand subscript = atomic number 
 
When looking at the atomic structure what does the left-hand superscript represent - correct answer The mass number 
 
Where on the atomic structure would we find the ionic change (if the isotope has one) - correct answer On the right hand super-script 
 
The mass number = a com...
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CHEM 131: Introduction to Chemistry with Lab Test | Complete Guide 2023 Rated 100%
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CHEM 131: Introduction to Chemistry with Lab Test | Complete Guide 2023 Rated 100%. 
What is the volume in mL of a cube of water with dimensions 11.0 cm × 11.0 cm × 11.0 cm ? 
A.1.33 × 103 
B.1.3 × 103 
C.1.33 × 10-3 
D.1.331 × 10-3 
E.none of the above 
Answer Key: A 
Feedback: This is discussed in section 2.8 in the text. 
Question 5 of 12 0.0/ 4.0 Points 
When the value 98.54 is rounded to two significant figures, the number should be reported as: 
A.98 
B.98.5 
C.99 
D.100 
E.none of t...
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TEST BANK FOR CHEMISTRY; AN ATOMS FIRST APPROACH, 2ND EDITION BY STEVEN S. ZUMDAHL | COMPLETE CHAPTER 1-21
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TEST BANK FOR CHEMISTRY; AN ATOMS FIRST APPROACH, 2ND EDITION BY STEVEN S. ZUMDAHL | COMPLETE CHAPTER 1-21. Consider the element indium, atomic number 49, atomic mass 114.8 g. The nucleus of an atom of indium-112 
contains: 
a. 49 protons, 63 neutrons, 49 electrons. 
b. 49 protons, 49 neutrons. 
c. 49 protons, 49 alpha particles. 
d. 49 protons, 63 neutrons. 
e. 49 protons, 112 neutrons. 
ANSWER: d 
POINTS: 1 
2. A hypothetical element consists of two isotopes of masses 78.95 amu and 80.95 amu w...
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CHEM 131 Introduction to Chemistry with Lab Test Complete Guide 2023/2024 Rated A+
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CHEM 131 Introduction to Chemistry with Lab Test Complete Guide 2023/2024 Rated A+. Who discovered the atomic theory? 
A.Antoine Lavoisier 
B.John Dalton 
C.John Dalton and Antoine Lavoisier 
D.Albert Einstein 
E.none of the above 
Answer Key: B 
Feedback: Good! It was Dalton. 
Question 2 of 12 4.0/ 4.0 Points 
Who discovered the law of conservation of mass? 
A.Albert Einstein 
B.John Dalton and Antoine Lavoisier 
C.Antoine Lavoisier 
D.John Dalton 
E.none of the above 
Answer Key: C 
Feedback: ...
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CHM 1025 Exam 1 (possible questions with accurate answers)
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pure substance correct answers matter with a fixed composition 
 
element correct answers matter made up of one type of material 
 
compound correct answers molecule containing atoms of two or more elements that are chemically combined in fixed proportions 
 
element symbols correct answers shorthand version of an elements formal name 
 
chemical formula correct answers describe the composition of a compound using element symbols to show the makeup and subscripts to indicate the proportions of t...
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TEST BANK FOR CHEMISTRY: AN ATOMS FIRST APPROACH 2ND EDITION BY STEVEN S. ZUMDAHL | COMPLETE CHAPTER 1-21
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TEST BANK FOR CHEMISTRY: AN ATOMS FIRST APPROACH 2ND EDITION BY STEVEN S. ZUMDAHL | COMPLETE CHAPTER 1-21. Chapter 1 - Chemical Foundations 
1. Consider the element indium, atomic number 49, atomic mass 114.8 g. The nucleus of an atom of indium-112 
contains: 
a. 49 protons, 63 neutrons, 49 electrons. 
b. 49 protons, 49 neutrons. 
c. 49 protons, 49 alpha particles. 
d. 49 protons, 63 neutrons. 
e. 49 protons, 112 neutrons. 
ANSWER: d 
POINTS: 1 
2. A hypothetical element consists of two isotopes...
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Honors Chemistry- Bonding
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Honors Chemistry- Bonding 
chemical bond ️mutual electrical attraction between the nuclei and valence electrons of different 
atoms that binds the atoms together because of have wanting a lower potential energy 
ionic ️bond with electrical attraction between large numbers of cations and anions ; give up electrons 
covalent ️bonding that results from sharing of electron pairs between two atoms 
Electronegativity ️measure of atoms ability to attract electrons; degree of ionic or coval...
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SCIN131 Lesson 04 - Week 04 Quiz Questions with 100% Correct Answers
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Lesson 04 - Week 04 Quiz 
Return to Assessment List 
 
Part 1 of 3 -	44.0/ 52.0 Points 
 
Question 1 of 25 
4.0/ 4.0 Points 
`Eureka! I've discovered a new compound! Yay for me. I have determined that its empirical formula, but in order to determine its actual molecular formula, I need to know which of the following? 
 
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A.	the number of moles of the compound in a 1.00 g sample of the substance 
 
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B. the density of the compound 
 
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C. the boiling point and freezing poin...
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AC-HPAT Physics :) Actual Exam Questions And Correct Verified Answers.
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distance - correct answer The length of a path between two points 
 
Displacement - correct answer Distance and direction of an object's change in position from the starting point. 
 
position - correct answer the location of an object 
 
Speed - correct answer The distance an object travels per unit of time 
 
Ac...
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