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suter [353]
3 years ago
15

01:45:05 Which statement describes how diffusion works? Molecules always move from inside of the cell to outside of the cell. Mo

lecules always move from areas of high concentration to low concentration. Molecules always move from areas of low concentration to high concentration. Molecules always move from of outside the cell to inside of the cell.
Chemistry
1 answer:
Tom [10]3 years ago
4 0

Answer:

Molecules always move from areas of high concentration to low concentration.

Explanation:

The correct answer to how diffusion works would be that <u>molecules always move from areas of high concentration to low concentration</u>.

<em>Diffusion is generally defined as the movement of molecules - solid, liquid, or gases - from the region of higher concentration of the molecule to the region of lower concentration of the same molecule.</em> The net movement of molecules continues until an equilibrium is established between the two sides.

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3 years ago
Rank the following from highest to lowest priority according to the Cahn-Ingold-Prelog system: -CH2CH3, -CHCH2, -CCH, -CH3.
mario62 [17]

Answer:

The order will be:

CCH > CHCH₂ > CH₂CH₃> CH₃

Explanation:

According to Cahn-Ingold-Prelog system we rank the groups based on the atomic number of directly attached atom with the chiral carbon.

For example: between C and H, we rank Carbon first.

If the same atoms are attached for different groups then we prioritized based on the second element with highest atomic number.

For example:

Among CH₃ and C₂H₅, the priority will be given to C₂H₅.

If an atom is double or triple bonded to the directly attached atom then each pi bond is considered to be a new atom.

Hence CH=CH₂ means, that there are two carbons attached to CH carbon.

So the order based on above selection rules will be:

CCH > CHCH₂ > CH₂CH₃> CH₃

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4 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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Explanation:

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