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【单选题】
Given 1.00 g of an unknown sulfate salt, ASO 4 , the following steps are performed: 1. The salt is dissolved in water 2. An excess of BaCl 2 is added resulting in the formation of a precipitate 3. The sample is washed and dried. The mass of the precipitate is determined to be 1.45 g We can write the following chemical equation to represent steps 1 & 2 ASO 4 (aq) + BaCl 2 (aq) → BaSO 4 (s) + ACl 2 (aq) What is the identity of the cation A?
A.
Mn 2+
B.
Mg 2+
C.
Fe 2+
D.
Pb 2+
E.
Zn 2+
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A.
braised fish
B.
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A.
on
B.
in
C.
to
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A.
in
B.
to
C.
on
D.
with
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A.
for
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as
C.
with
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A.
town
B.
capital
C.
college
D.
centre
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