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givi [52]
3 years ago
13

How fast do electromagnetic waves travel? *

Chemistry
1 answer:
ivann1987 [24]3 years ago
5 0
Answer : speed of light
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The hall reaction of an oxidation-reduction reaction shows that iron gains electrons. What does this electron gain mean for iron
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Answer: Iron gains electrons mean It is reduced

Explanation:

Oxidation-reduction reaction or redox reaction is defined as the reaction in which oxidation and reduction reactions occur simultaneously.

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A chemist added an excess of sodium sulfate to a solution of a soluble barium compound to precipitate all of the barium ions as
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comparing the mole ratio

1.7268 mol of BaSO₄ yields 1.7268 mol of Ba²⁺

403 mg BaSO₄  yields     ( 1.7268 × 137.327 ) where 137.327 is the molar mass of Barium mol of Ba²⁺

441 mg BaSO₄  will yield   ( 1.7268 × 137.327  × 441 mg ) / 403 mg = 259 .497 mg

mas percentage of the Barium compound = 259 .497 mg / 441 mg × 100 = 58.84%

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