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kaheart [24]
3 years ago
10

Compare the atomic radii of neutral atoms 7N,8O,11Na and 12Mg and expalin briefly

Chemistry
1 answer:
Ghella [55]3 years ago
4 0
Okay that’s cooo and yeah basinsnsjeidnsjw12539484!( is the correct answer
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A chemist must prepare 800ml of potassium hydroxide solution with a pH 13 of at 25. He will do this in three steps:
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Answer:

4.48 grams of potassium hydroxide that the chemist must be weighing out.

Explanation:

The pH of the KOH solution = 13

pH + pOH = 14

pOH = 14 - pH = 14 - 13 = 1

pOH=-\log[OH^-]

1=-\log[OH^-]

[OH^-]=0.1 M

KOH(aq)\rightarrow K^+(aq)+OH^-(aq)

1 mole of hydroxide ions are obtained from 1 mole of KOH. Then 0.1 mole of hydroxide ions will be obtained from :

\frac{1}{1}\times 0.1 M=0.1 M of KOH

[Molarity]=\frac{\text{Moles of solute}}{\text{Volume of solution(L)}}

Volume of KOH solution = 800 mL = 0.800 L ( 1 mL = 0.001 L)

0.1 M=\frac{\text{Moles of KOH}}{0.800 L}

Moles of KOH = 0.1 M × 0.800 L = 0.08 mol

Mass of 0.08 moles of KOH :

0.08 mol × 56 g/mol = 4.48 g

4.48 grams of potassium hydroxide that the chemist must be weighing out.

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A student made the Lewis dot diagram of a compound as shown.
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Consider the aldol-dehydration reaction. Draw the two possible products of the reaction between benzaldehyde and methylethylketo
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An $\text{aldol condensation}$ reaction is a type of \text{condensation reaction} in organic chemistry where the enol or an enolate ion reacts with the carbonyl compound and forms a $\beta$-hydroxyaldehyde or a $\beta$-hydroxyketone, and then followed by a dehydration to give conjugated enone.  

Benzaldehyde reacts with methylketone and forms two products:  

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In an experiment, students were instructed to equally heat a sample of soil and a sample of water with heat lamps and then measu
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D. i had this on my science test!!!

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