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Chemistry
Chemistry
Problem
A sample weighing 2.198 g containing a mixture of
AO
\text{AO}
AO
and
A
2
O
3
\text{A}_2\text{O}_3
A
2
O
3
takes 0.015 mole of
K
2
Cr
2
O
7
\text{K}_2\text{Cr}_2\text{O}_7
K
2
Cr
2
O
7
to oxidize the sample completely to form
AO
4
−
\text{AO}_4^-
AO
4
−
and
Cr
3
+
\text{Cr}^{3+}
Cr
3
+
. If 0.0187 mole of
AO
4
−
\text{AO}_4^-
AO
4
−
is formed, what is atomic mass of A?
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