Ch.2 - Atoms, Molecules & Ions
Chapter 2, Problem 125
How many moles are in each of the following samples? (a) 11.51 g of Ti (b) 29.127 g of Na (c) 1.477 kg of U
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Related Practice
Textbook Question
Copper metal has two naturally occurring isotopes: copper-63 (69.15%; isotopic mass = 62.93) and copper-65 (30.85%; isotopic mass 64.93). Calculate the atomic weight of copper, and check your answer in the periodic table.
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Textbook Question
Germanium has five naturally occurring isotopes: 70^Ge, 20.5%, 69.924; 72^Ge, 27.4%, 71.922; 73^Ge, 7.8%, 72.923; 74^Ge, 36.5%, 73.921; and 76^Ge, 7.8%, 75.921. What is the atomic weight of germanium?
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Textbook Question
What is the mass in grams of each of the following samples?
(a) 1.505 mol of Ti
(b) 0.337 mol of Na
(c) 2.583 mol of U
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Textbook Question
If the atomic weight of an element is x, what is the mass in grams of 3.17 * 1020 atoms of the element?
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Textbook Question
If 6.02 * 1023 atoms of element Y have a mass of 83.80 g, what is the identity of Y?
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Textbook Question
Refer to Figure 2.10 showing a schematic illustration of a mass spectrometer. (a) What is the purpose of bombarding the gaseous atoms with an electron beam?
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