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9966 [12]
2 years ago
9

DETERMINE THE RELATIVE ATOMIC MASS OF A ELEMENT 4 WITH THE ATOMIC MASSES OF IT'S ISOTOPE 63 AND 65 IF THE PELATIVE ABOUT DANCES

ARE 80 PERCANTAGE AND 20 PERCENTAGE RESPECTIVELY​
Chemistry
1 answer:
Anika [276]2 years ago
6 0

Answer:

eatmy mysterious d.1.c.k.

Explanation:

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How would you prepare 1.00 L of a 0.50 M solution of each of the following?
Lunna [17]

Answer:

Take approx 41.7 mL of 12-M HCl in a 1.00-L flask and fill the rest of the volume with distilled water.

Explanation:

Hello,

In this case, for the dilution process from concentrated  12-M hydrochloric acid to 1.00 L of the diluted 0.50M hydrochloric acid, the volume of concentrated HCl you must take is computed by considering that the moles remain constant for all dilution processes as shown below:

n_1=n_2

Which can also be written in terms of concentrations and volumes:

M_1V_1=M_2V_2

Thus, solving for the initial volume or aliquot that must be taken from the 12-M HCl, we obtain:

V_1=\frac{M_2V_2}{M_1} \\\\V_1=\frac{1.00L*0.5M}{12M}\\ \\V_1=0.0417L=41.7mL

It means that you must take approx 41.7 mL of 12-M HCl in a 1.00-L flask and fill the rest of the volume with distilled water for such preparation.

Best regards.

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3 years ago
The paths that planets follow around the sun are called ____ , and they are shaped like an ellipse.
weeeeeb [17]
The path that planets follow around the sun are called orbitals.
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If an atom loses 2 electrons, what is the charge on the resulting ion<br><br> what is an example
saveliy_v [14]

Explanation:

The charge of an ion would be +2

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Benzene was treated with isopropyl chloride in the presence of aluminum trichloride under conditions that favor dialkylation. dr
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However, we are told that the conditions are set up to encourage dialkylation. The isopropyl group is a group that donates electron density through induction. Therefore, it is an ortho- and para-directing group. This means that once one isopropyl group is substituted on to the benzene ring, the second substitution will be favoured in the ortho- and para-positions. In this instance, the major product is the 1,4-disubstituted product. The reason being is that the isopropyl groups are very bulky, and the steric hindrance of having two isopropyl groups adjacent leads to a small amount of this product being formed.

There will also be trace amounts of the meta-substituted product, but the 1,4- and 1,2-substituted products are more favoured.

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3 years ago
...............................<br>..
ArbitrLikvidat [17]
........…..………………................
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