A5.0 g sample of copper(ll) oxide containing an inert contaminant is analyzed and found to contain 3.0 g copper. using molar masses of 64 g/mol for copper and 16 g/mol for oxygen, which of the following is the percent purity of the copper(ii) oxide sample? elimination tool a 80% 75% c 60% 50%
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Which diagram shows the correct way to represent an ionic compound of magnesium oxide?
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Consider the reduction reactions and their equilibrium constants. cu+(aq)+e−↽−−⇀cu(s)pb2+(aq)+2e−↽−−⇀pb(s)fe3+(aq)+3e−↽−−⇀fe(=6.2×108=4.0×10−5=9.3×10−3 cu + ( aq ) + e − ↽ − − ⇀ cu ( s ) k =6.2× 10 8 pb 2 + ( aq ) +2 e − ↽ − − ⇀ pb ( s ) k =4.0× 10 − 5 fe 3 + ( aq ) +3 e − ↽ − − ⇀ fe ( s ) k =9.3× 10 − 3 arrange these ions from strongest to weakest oxidizing agent.
Answers: 3
A5.0 g sample of copper(ll) oxide containing an inert contaminant is analyzed and found to contain 3...
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