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Dafna11 [192]
3 years ago
5

Sulfurous acid reacts with barium hydroxide.

Chemistry
1 answer:
Ivenika [448]3 years ago
3 0

Answer:

Ba(OH)2 + H2SO3 = BaSO3 + H2O -

Explanation:

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After the electrons in the Ar configuration are accommodated, there are 8 electrons left for the 3d and 4s shells. The 4s subshell, when empty, is at a lower level than the 3d level, so it fills first. Two electrons are placed here. Therefore, 3d has 6 electrons in Fe.
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A. To be precise, it must be able to make measurements repeatedly over a long period of time.

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