The composition of materials such as alloys and ceramics can be described in terms of mole percentage (mol%), atom percentage (at%), or weight percentage (wt%). Carry out the following conversions among these units. (Enter unrounded anwers.) (a) 93.8 wt% Cu and 6.2 wt% Al to at% at% Cu at% Al (b) 70. mol% Ni0 and 30. mol% MgO to wt% wt% Nio wt% MgO (c) 22.6 wt% MgO and 77.4 wt% Fe2O3 to mol% mol% MgO mol% Fe2 O3

The composition of materials such as alloys and ceramics can be described in terms of mole percentage (mol%), atom percentage (at%), or weight percentage (wt%). Carry out the following conversions among these units. (Enter unrounded anwers.) (a) 93.8 wt% Cu and 6.2 wt% Al to at% at% Cu at% Al (b) 70. mol% Ni0 and 30. mol% MgO to wt% wt% Nio wt% MgO (c) 22.6 wt% MgO and 77.4 wt% Fe2O3 to mol% mol% MgO mol% Fe2 O3

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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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

The composition of materials such as alloys and ceramics can be described in terms of mole percentage (mol%),
atom percentage (at%), or weight percentage (wt%). Carry out the following conversions among these units. (Enter
unrounded anwers.)
(a)
93.8 wt% Cu and 6.2 wt% Al to at%
at% Cu
at% Al
(b)
70. mol% Ni0 and 30. mol% MgO to wt%
wt% NiO
wt% MgO
(c)
22.6 wt% MgO and 77.4 wt% Fe2O3 to mol%
mol% MgO
mol% Fe2 O3

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