II. Find the Empirical and Molecular formulas given the percent composition or masses of: (10 pts. each) a B. 81.8 g of C and 18.2 g of H that has a molar mass of 132.0 g/mol. C. 20.2% Na, 37.6 % S, and 42.2 %0 that has a molar mass of 682.8 g/mol.

II. Find the Empirical and Molecular formulas given the percent composition or masses of: (10 pts. each) a B. 81.8 g of C and 18.2 g of H that has a molar mass of 132.0 g/mol. C. 20.2% Na, 37.6 % S, and 42.2 %0 that has a molar mass of 682.8 g/mol.

Introductory Chemistry: A Foundation

9th Edition

ISBN:9781337399425

Author:Steven S. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Donald J. DeCoste

Chapter8: Chemical Composition

Section: Chapter Questions

Problem 128CP: itamin B12 , cyancobalamin, is essential for human nutrition. Its molecular formula is...

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Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.

Question

II. Find the Empirical and Molecular formulas
given the percent composition or masses of: (10
pts. each)
a
B. 81.8 g of C and 18.2 g of H that has a molar
mass of 132.0 g/mol.
C. 20.2% Na, 37.6 % S, and 42.2 %0 that has a
molar mass of 682.8 g/mol.

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