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Calculating Formula Weights Calculate the formula weight

Chemistry: A Molecular Approach | 3rd Edition | ISBN: 9780321809247 | Authors: Nivaldo J. Tro

Problem 1PE Chapter 3.5SE

Chemistry: A Molecular Approach | 3rd Edition

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Chemistry: A Molecular Approach | 3rd Edition | ISBN: 9780321809247 | Authors: Nivaldo J. Tro

Chemistry: A Molecular Approach | 3rd Edition

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Problem 1PE

Calculating Formula Weights Calculate the formula weight of (a) sucrose, C12H22O11 (table sugar); and (b) calcium nitrate, Ca(NO3)2. Which of the following is the correct formula weight for calcium phosphate? (a) 310.2 amu, (b) 135.1 amu, (c) 182.2 amu, (d) 278.2 amu, (e) 175.1 amu.

Step-by-Step Solution:

Solution 1PE Step 1 Formula weight, in chemistry, the sum of the atomic weights of all atoms appearing in a given chemical formula. It is generally applied to a substance that does not consist of individual molecules, such as the ionic compound sodium chloride. Such a substance is customarily represented by a chemical formula that describes the simplest ratio of the number of atoms of the constituent elemen .e., an empirical formula. Molar mass of 12H22O11(sucrose) is 342.2965 g/mol Formula in Hill system is C12H22O11 Elemental composition of C12H22O11(sucrose): Symbol Element Atomic weight Atoms Mass percent C Carbon 12.0107 12 42.1063 % H Hydrogen 1.00794 22 6.4782 % O Oxygen 15.9994 11 51.4155 %. Step 2 Calcium nitrate The molecular formula of calcium nitrate is Ca(NO3)2. There are three atoms in the molecule 1 calcium,2 nitrogen,and5 oxygen atoms . The atomic weight of calcium is 40.0g . The atomic weight of nitrogen is 14.0g and The atomic weight of oxygen is 16.0g The formula weight of calcium nitrate is 164.9g/mol.

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Chapter 3.5SE, Problem 1PE is Solved
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Textbook: Chemistry: A Molecular Approach
Edition: 3rd
Author: Nivaldo J. Tro
ISBN: 9780321809247

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