Calculate the Molar mass of the following: 1. C14H29NO4S ( Penicillin – an antibiotic) 2. (NH4)2CO3 ( Baking Powder ) B. Calculate the % composition of each atom in the following compounds: NaHCO3 ( Baking soda ) C15H21O2N.HCl ( Mepiridine Hydrochloride – a sedative )

Calculate the Molar mass of the following: 1. C14H29NO4S ( Penicillin – an antibiotic) 2. (NH4)2CO3 ( Baking Powder ) B. Calculate the % composition of each atom in the following compounds: NaHCO3 ( Baking soda ) C15H21O2N.HCl ( Mepiridine Hydrochloride – a sedative )

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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Concept explainers

Stoichiometry

Stoichiometry is a chemical division that evaluates the quantitative content of the chemical process with the help of the reacting molecules or products taking part in the reaction. The term “stoicheion” in “Stoichiometry”, is an old Greek term for "element" whereas “metron” means "measure".

Question

UANTITATIVE COMPOSITIONS OF COMPOUNDS A. Calculate the Molar mass of the following: 1. C14H29NO4S ( Penicillin – an antibiotic) 2. (NH4)2CO3 ( Baking Powder ) B. Calculate the % composition of each atom in the following compounds: NaHCO3 ( Baking soda ) C15H21O2N.HCl ( Mepiridine Hydrochloride – a sedative ) C. Empirical and Molecular Formula 1. Allicin is the compound responsible for the characteristic smell of garlic. An analysis of the compound gives the following percent composition by mass: 44.4 % C, 6.21% H, 39.5% S, and 9.86 %O. Calculate the empirical formula. What is the molecular formula given that its molar mass is about 162 g? 2. A compound is 27.4% S, 12.0% N and 60.6 % Cl. What is its empirical formula? If the compound has a molar mass of 351 g/mol, what is the molecular formula?

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