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OverLord2011 [107]
3 years ago
5

Write structures for the three isomers of the aromatic hydrocarbon xylene, C6H4(CH3)2.

Chemistry
1 answer:
levacccp [35]3 years ago
5 0

Answer:

Explanation:

Xylene exists as 3 isomers like Ortho ,para and meta xylenes

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What happens chemically when quick lime is added to water?
sineoko [7]

Answer:

CaO + H20 => Ca(OH)2

Explanation:

quick lime ia a oxyde and when it reacts with water it gives hydroxide

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3 years ago
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A buffer solution contains 0.345 M acetic acid and 0.377 M sodium acetate . If 0.0613 moles of potassium hydroxide are added to
melamori03 [73]

Answer:

pH = 5.54

Explanation:

The pH of a buffer solution is given by the <em>Henderson-Hasselbach (H-H) equation</em>:

  • pH = pKa + log\frac{[CH_3COO^-]}{[CH_3COOH]}

For acetic acid, pKa = 4.75.

We <u>calculate the original number of moles for acetic acid and acetate</u>, using the <em>given concentrations and volume</em>:

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  • CH₃COOH ⇒ 0.345 M * 0.250 L = 0.0862 mol CH₃COOH

The number of CH₃COO⁻ moles will increase with the added moles of KOH while the number of CH₃COOH moles will decrease by the same amount.

Now we use the H-H equation to <u>calculate the new pH</u>, by using the <em>new concentrations</em>:

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6 0
3 years ago
How to find the final temperature
sveta [45]

Answer:

The final temperature will be "12.37°".

Explanation:

The given values are:

mass,

m = 0.125 kg

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As we know,

⇒  q=mc \Delta t

On putting the estimated values, we get

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A nuclear reaction in which a heavy nuclear splits spontaneously or on impact with another particle with the release of energy- fission

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S 2<br> How many protons
serg [7]
16 protons
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There are 16 protons (from the proton number). If it was a neutral atom, there would be 16 electrons.
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