Atomic mass unit amu - Study guides, Class notes & Summaries

Biological macromolecules formed when atoms of carbon, hydrogen, oxygen, nitrogen, phosphorus, and other elements bond with each other in unique and varied ways Atom building blocks of all matter four classes of biological macromolecules carbohydrates, lipids, proteins, and nucleic acids cell fundamental, basic unit of life Matter anything that occupies space and has mass Subatomic Particles of Atom protons, neutrons, and electrons Electrons Subat...

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 isoto...

CHEM 101 ACTUAL EXAM QUESTIONS AND CORRECT DETAILED ANSWERS WITH RATIONALES (VERIFIED ANSWERS) ALREADY GRADED A+ NEWEST VERSION If a compound's chemical formula was experimentally determined to be 18, the chemical formula could be: CH4 NH3 H2O PCl5 - Answer H2O Use the periodic table to get the atomic masses of each element. Then you can calculate the formula mass as such: H=1.008×2=2.016 O=15.999×1=15.999 Adding these together we get 18.015, which is approximately 18. The sum...

atomic mass Correct Answer-the mass of an atom in amu average atomic mass Correct Answer-the weighted average of all of the naturally occurring isotopes of the element mole (mol) Correct Answer-a unit to count number of particles 6.0221415 x 10^23 Correct Answer-the amount of a mol in scientific notation (Avogadro's number) molar mass Correct Answer-the mass of 1 mole of atoms in grams (g/mol) Avogadro's number Correct Answer-6.0221415 x 10^23 molecular mass (molecular weight...

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...

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...

what makes a material conductive - ANSWER Reasoning for conductivity: delocalized 'sea' of electrons loosely bonding the layers together. These delocalized electrons can all move along together - making graphite a good electrical conductor. atomic number - ANSWER Z the number of protons in the nucleus of an atom atomic mass unit - ANSWER a unit of mass that describes the mass of an atom or molecule measured in amu

How many Sig Figs in 0.008202 - 4 How many sig figs would be in the answer of 6.6 multiplied by 3.56007 - 2 How can we calculate the number of neutrons? - Number of neutrons = mass number (A) - number of protons/ atomic number (Z) How can we calculate the atomic charge? - Atomic charge= number of protons- number of electrons Avogadro's number - 6.022 x 10^23. The number of particles in exactly one mole of a pure substance atomic mass unit (amu) - one twelfth the mass of a carbon-12 a...

accuracy - how close a measurement is to a true or accepted value acid - proton donor Acid Naming Rules - 1. Add O, add "per" prefix. 2. Subtract 1 O, ending in "ous". 3. Subtract 2 O's, add "hypo" prefix with "ous" suffix. acid-base titration - a solution of a known concentration (standard) is added gradually to another in order to determine the concentration actual yield - the amount of actual product formed in a reaction Ag⁺ - Silver cation Al³⁺ - Aluminum cation allot...

IRRSP Exam Study Guide An atom, group of atoms, molecules or particles that have acquired or are regarded as having a net electric charge. - Ion Atoms having the same number or protons but a different number on neutrons in the nuclei. Atoms with the same atomic number (the same chemical element) but different atomic weights. - Isotope Any source that disrupts the electrical balance of an atom and results in the production of ions. - Ionization The radation dose or amount of radat...