Calculating Percentage Composition Calculate the percentage of carbon, hydrogen, and oxygen (by mass) in C12H22O11. Calculate the percentage of potassium, by mass, in K2PtCI6.
Answer: Step 1: To calculate percent by mass, you need t etermine two things: the mass of just the element, and the molar mass of the whole compound. Then, you take the molar mass of just the element and divide it by the molar mass of the whole compound, and multiply by 100%. % composition of the element=(number of atoms of element)(atomic weight of element)/(formula weight of substance).*100%. Step 2 For sucrose molecule the following steps should be taken to solve : C12H22O11 %C=(12)(12.0 amu)/342.0 amu*100%=42 %. %H=(22)(1.008 amu)/342.0 amu*100%=6.4%. %O=(11)(16.0 amu)/342.0 amu*100%=51.5%.
Textbook: Chemistry: A Molecular Approach
Author: Nivaldo J. Tro
The answer to “Calculating Percentage Composition Calculate the percentage of carbon, hydrogen, and oxygen (by mass) in C12H22O11. Calculate the percentage of potassium, by mass, in K2PtCI6.” is broken down into a number of easy to follow steps, and 24 words. This full solution covers the following key subjects: percentage, calculate, mass, composition, hydrogen. This expansive textbook survival guide covers 82 chapters, and 9464 solutions. The full step-by-step solution to problem: 2PE from chapter: 3.6SE was answered by , our top Chemistry solution expert on 02/22/17, 04:35PM. Since the solution to 2PE from 3.6SE chapter was answered, more than 482 students have viewed the full step-by-step answer. Chemistry: A Molecular Approach was written by and is associated to the ISBN: 9780321809247. This textbook survival guide was created for the textbook: Chemistry: A Molecular Approach, edition: 3.