??65% Wed 12 Chapter 3 lecture powerpoint pt 2-Spring 2018 a, Review View A-A Sh

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??65% Wed 12 Chapter 3 lecture powerpoint pt 2-Spring 2018 a, Review View A-A Shape Fill ST HAConvert to Picture Shapes Text Arrange QuickShape Out SmartArt Box Styles Sample Problem 3.14 Calculating Quantities of Reactants and Products: Amount (mol) to Amount (mol) Copper is obtained from copper(l) sulfide by roasting it in the presence of oxygen gas) to form powdered copper() oxide and gaseous sulfur dioxide. How many moles of oxygen are required to roast 10.0 mol of copper(l) sulfide? PROBLEM: 3-10 8

Explanation / Answer

2Cu2S (s) + 3O2 (g)   --------------------> 2Cu2O (s) + 2SO2(g)

mol O2 required = ?

10.0 mol Cu2S ? 3 mol O2 / 2 mol Cu2S

= 15 mol O2

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