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Chemistry
Chemistry
Problem
Consider the reaction
2
NO
+
O
2
→
2
NO
2
2\,\text{NO}+\text{O}_2 \rightarrow 2\,\text{NO}_2
2
NO
+
O
2
→
2
NO
2
. A reaction mixture initially contains
0.400
M
NO
0.400\,\text{M}\,\text{NO}
0.400
M
NO
and
0.300
M
O
2
0.300\,\text{M}\,\text{O}_2
0.300
M
O
2
. After 120 s, the concentration of
NO
2
\text{NO}_2
NO
2
is measured to be
0.150
M
0.150\,\text{M}
0.150
M
. What is the concentration of
O
2
\text{O}_2
O
2
at 120 s? a)
0.150
M
0.150\,\text{M}
0.150
M
b)
0.225
M
0.225\,\text{M}
0.225
M
c)
0.075
M
0.075\,\text{M}
0.075
M
d)
0.300
M
0.300\,\text{M}
0.300
M
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