Answered: For the dehydration experiment, the…

For the dehydration experiment, the mass of green crystals before heating was G.H g. After the experiment, it was found the mass of water removed was 0.GH g. Calculate the percent water by mass.

Introductory Chemistry For Today

8th Edition

ISBN:9781285644561

Author:Seager

Publisher:Seager

Chapter2: Atoms And Molecules

Section: Chapter Questions

Problem 2.60E

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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

For #2 the GH is 45 (G.H =4.5) Mass percent for oxalate is 60% on both trials

Data Table
Thal #l
Tral #2
Molanty kMn Oq
0. 04M
0.04 m
inital bret volume
4.20ML
I1.70ML
Mass of Green crystal 0.1162 9
U.10559
11.70ML
18.30ML
final buret volume

2. For the dehydration experiment, the mass of green crystals before heating was G.H g. After the
experiment, it was found the mass of water removed was 0.GH g. Calculate the percent water
by mass.
3. If the percent iron was found to be 11% by mass, calculate the percent mass of potassium.

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