Subscripts - Study guides, Class notes & Summaries

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...

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...

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...

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...

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: ...

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...

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...

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? • A. the number of moles of the compound in a 1.00 g sample of the substance • B. the density of the compound • C. the boiling point and freezing poin...

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...

Chem 1020 Final Exam Study Guide Questions| with Complete Solutions Matter. Any solid, liquid, gas, or plasma that occupies space and has a mass. Mixture. A combination of two or more substances that are not chemically combined. Homogeneous. A single-phase combination of solids, liquids, or gases with a uniform distribution of its constituents throughout the substance. Heterogeneous. A single-phase combination of solids, liquids, or gases that are not uniformly distribu...