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Veseljchak [2.6K]
3 years ago
14

the coal sample being used in this experiment is assumed to have 3% sulfur in its composition. what percent of sulfate is presen

t in the coal samples
Chemistry
1 answer:
mote1985 [20]3 years ago
7 0

Answer: The percent of sulfate is present in the coal samples is 0.999%.

Explanation:

Given: Percentage of sulfur present = 3%

In SO^{2-}_{4}, the percentage by weight of Sulfur is calculated as follows.

Percentage = \frac{32 g}{32 + 64} \times 100\\= 33.33 percent

This means that the amount of only sulfur present in SO^{2-}_{4} in the sample is as follows.

\frac{3}{100} \times 33.33\\= 0.999 percent

Thus, we can conclude that percent of sulfate is present in the coal samples is 0.999%.

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Answer:

A

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6 0
3 years ago
Which is the strongest acid listed in the table?
andrew11 [14]

Answer:

Hydrofluoric acid.

Explanation:

To know which of the acid is the strongest, let us determine the pka of each acid. This is illustrated below:

1. Acetic acid

Ka = 1.8x10^-5

pKa =..?

pKa = –logKa

pKa = –Log 1.8x10^-5

pKa = 4.74

2. Benzoic acid

Ka = 6.5x10^-5

pKa =..?

pKa = –logKa

pKa = –Log 6.5x10^-5

pKa = 4.18

3. Hydrofluoric acid.

Ka = 6.8x10^-4

pKa =..?

pKa = –logKa

pKa = –Log 6.8x10^-4

pKa = 3.17

4. Hypochlorous acid

Ka = 3.0x10^-8

pKa =..?

pKa = –logKa

pKa = –Log 3.0x10^-8

pKa = 7.52

Note: the smaller the pKa value, the stronger the acid.

The pka of the various acids as calculated above is given below:

Acid >>>>>>>>>>>>>>>>>> pKa

1. Acetic acid >>>>>>>>>> 4.74

2. Benzoic acid >>>>>>>> 4.18

3. Hydrofluoric acid >>>> 3.17

4. Hypochlorous acid >> 7.52

From the above illustration, we can see that hydrofluoric acid has the lowest pKa value. Therefore, hydrofluoric acid is the strongest among them.

6 0
3 years ago
Do plasmids have an importance beyond the practice of genetic engineering?
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Equation for the for formation of ethanoic acid<br>​
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3 years ago
Explain how its electron configuration influences the chemical behavior of an atom.
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More unstable an electron configuration , the more reactive an atom will    become.

How electron configuration influences the chemical behavior of an atom?

This is happen generally, If we look at the Group 1 elements in the periodic table, they are all highly reactive as they have 1 electron in their outermost shells - an unstable configuration in terms of energy.

Also, the noble gases in Group 8 in the periodic table are 'inert' that means they don't react (or more correctly, have an incredibly low reactivity). This is because they have 8 electrons in their outermost shell and thus have no need to acquire or lose electrons to possess a stable electron configuration.

Hence, electron configuration influences the chemical behavior of an atom.

learn more about electronic configuration here :

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