Match terms with their definitions v Avogardo's number v Molar mass v mole v Atomic mass A. mass of 1 mole of a substance (expressed in grams and can be found on a periodic table) B. a group of particles (elementary units) equal to 6.02 x 10o23 C. number of elementary units in 1 mole (6.02 x 1023 units = 1 mole) D. mass of all protons and neutrons within an atom (expressed in amu and can be found on the periodic table)

Match terms with their definitions v Avogardo's number v Molar mass v mole v Atomic mass A. mass of 1 mole of a substance (expressed in grams and can be found on a periodic table) B. a group of particles (elementary units) equal to 6.02 x 10o23 C. number of elementary units in 1 mole (6.02 x 1023 units = 1 mole) D. mass of all protons and neutrons within an atom (expressed in amu and can be found on the periodic table)

Chemistry

9th Edition

ISBN:9781133611097

Author:Steven S. Zumdahl

Publisher:Steven S. Zumdahl

Chapter2: Atoms, Molecules, And Ions

Section: Chapter Questions

Problem 44E: Indium oxide contains 4.784 g of indium for every 1.000 g of oxygen. In 1869, when Mendeleev first...

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The atomic masses in die periodic table are relative masses and average masses. Explain.
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A jar contains some number of jelly beans. To find out precisely how many are in the jar, you could dump them out and count them. How could you estimate their number without counting each one? (Chemists need to do just this kind of bean counting when they work with atoms and molecules. Atoms and molecules are too small to count one by one, so chemists have worked out other methods to determine the number of atoms in a sample.)
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Indium oxide contains 4.784 g of indium for every 1.000 g of oxygen. In 1869, when Mendeleev first presented his version of the periodic table, he proposed the formula In2O3 for indium oxide. Before that time it was thought that the formula was InO. What values for the atomic mass of indium are obtained using these two formulas? Assume that oxygen has an atomic mass of 16.00.
Round atomic weights to the nearest whole number, and determine how many helium atoms would balance one carbon atom on a seesaw.
When we refer to doughnuts or cookies, we often refer to 1doz of them, which corresponds to 12. Why is the dozen an inconvenient number when referring to atoms? Why is Avogadros number, 6.0221023, more convenient?
Calculate the nominal mass of each ion. Unless otherwise indicated, use the mass of the most abundant isotope of each element. (a) (b) (c)