3 years ago

Help it’s a quiz!! And it’s timed?

2 answers:

8 0

Sorry man i sad to see i’m late

8 0

Izkskdmdod

Good luck oh say

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Brums [2.3K]

Answer:

I believe it's D

Explanation:

they both are worked a lot and it makes the most sense.

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2 years ago

barxatty [35]

Answer:

The precipitate was chromium hydroxide, which then reacted with more hydroxide to produce a soluble complex, Cr(OH)4

Explanation:

The following reaction takes place when chromium(III) nitrate reacts with NaOH:

$Cr(NO)_{3}$ +3 NaOH → $Cr(OH)_{3}$ (s)+ $NaNO_{3}$

The precipitate that is formed is chromium hydroxide, $Cr(OH)_{3}$

When more NaOH is added, the precipitate reacts with it which then results in the formation of a soluble complex ion:

$Cr(OH)_{3}$ (s) + $OH^{-}$ (aq) → $Cr(OH)_{4} ^{-}$ (aq)

$Cr(OH)_{4} ^{-}$ is soluble complex ion

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3 years ago

sergij07 [2.7K]

Answer is 2KClO3 3O2 + 2KCl

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Pavlova-9 [17]

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your indirect water use.

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3 years ago

EleoNora [17]

Answer: b

Explanation:

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2 years ago