A helium nucleus has two protons and two neutrons. How

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

Problem 50E Chapter 2

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 50E

A helium nucleus has two protons and two neutrons. How many electrons would it take tc equal the mass of a helium nucleus?

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Solution : In chemistry, the empirical formula of a chemical compound is the simplest positive integer ratio of atoms present in a compound. The smallest whole number ratios of the subscripts of molecular formula are derived by dividing the subscripts by largest common factor. For example: the mpirical formula of disulfur dioxide is S 2O2. the e mpirica l formula of ethane(C H )2w6l be CH . 3 Molecular formula is a chemical formula that gives the total number of atoms of each element in each molecule of a substance. These definite numbers of atoms present in a molecule are represented as s ubscripts in the molecular formula. For Example : C H2s6he molecular formula of ethane. 1 molecule of ethane contains 2 atoms of Carbon a nd 6 hydrogen (H) atoms. Now, Let’s determine the molecular and empirical formulas for the following : (a) the organic solvent benzene, which has six carbon atoms and six hydrogen atoms: Molecular formula : Benzene has 6 Carbon(N) atoms and 6 Hydrogen(H) atoms and therefore, the molecular formula is C H . 6 6 Empirical formula : It is the smallest whole number ratios of the subscripts of the molecular formula. The largest common factor that can divide the subscripts is 6. Therefore, empirical formula for the above compound is CH. (b) the compound silicon tetrachloride, which has a silicon atom and four chlorine atoms and...

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Chapter 2, Problem 50E is Solved
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Textbook: Chemistry: A Molecular Approach
Edition: 3rd
Author: Nivaldo J. Tro
ISBN: 9780321809247

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A helium nucleus has two protons and two neutrons. How

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