2 years ago

I am one percent away from failing. I just need help. No false answers

Chemistry

1 answer:

Basile [38]2 years ago

6 0

Answer:

I did it in steps in the picture I just hope it helps you to understand:)

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Is cornstarch able to disintegrate in fire or an open flame?

Darya [45]

Answer:

Yes

Explanation:

I just quickly looked it up. Cornstarch is extremely flammable.

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2 years ago

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Complete the balanced dissociation equation for the compound below. If the compound does not dissociate, write NR after the reac

nikdorinn [45]

Answer:

K₂Cr₂O₇(s) ⇒ 2 K⁺(aq) + Cr₂O₇²⁻(aq)

Explanation:

Potassium dichromate (K₂Cr₂O₇) is a strong electrolyte, that is, when dissolved in water (the medium), it dissociates in cation potassium (K⁺) and anion dichromate (Cr₂O₇²⁻). The balanced dissociation equation is:

K₂Cr₂O₇(s) ⇒ 2 K⁺(aq) + Cr₂O₇²⁻(aq)

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2 years ago

I need an answer now please asap and you will me marked brainiest please it's missing I need it now.

BaLLatris [955]

I really hope this helps I’ve been there too and I’m just doing this so I get the 20 words and I have the picture

8 0

2 years ago

You have an aqueous solution of chromium(III) nitrate that you titrate with an aqueous solution of sodium hydroxide. After a cer

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

Movement of electrons about a central nucleus is a concept by whom?

Alenkasestr [34]

The answer is bohr hope this helps :)

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2 years ago

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