Respuesta :
1) Balance the chemical equation.
[tex]SO_{2(g)}+O_{2(g)}\rightarrow SO_{3(g)}[/tex]List the elements in the reactants.
S: 1
O: 4
List the elements in the products.
S: 1
O: 3
S is already balanced.
Balance O
[tex]2SO_2+O_2\rightarrow2SO_3[/tex]List the elements in the reactants.
S: 2
O: 6
List the elements in the products.
S: 2
O: 6
The balanced equation is
[tex]2SO_2+O_2\operatorname{\rightarrow}2SO_3[/tex]2) Moles of SO3 formed from O2.
The molar ratio between SO3 and O2 is 2 mol SO3: 1 mol O2.
[tex]mol\text{ }SO_3=0.94\text{ }mol\text{ }O_2*\frac{2\text{ }mol\text{ }SO_3}{1\text{ }mol\text{ }O_2}=[/tex][tex]mol\text{ }SO_3=1.88\text{ }mol\text{ }SO_3[/tex]3) Convert moles of SO3 to molecules of SO3.
Avogadro's number is 6.022*10^23
1 mol SO3= 6.022*0^23 molecules of SO3.
[tex]molecules\text{ }SO_3=1.88\text{ }mol\text{ }SO_3*\frac{6.022*10^{23}\text{ }molecules\text{ }SO_3}{1\text{ }mol\text{ }SO_3}[/tex][tex]molecules\text{ }SO_3=1.132136*10^{24}\text{ }molecules\text{ }SO_3[/tex]1.13*10^24 molecules are formed from 0.35 mol O2.
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