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miskamm [114]
2 years ago
14

You are given two closed containers. Each containing a liquid solvent. Ammonia and table salt will dissolve in container A. Hexa

ne and carbon dioxide will dissolve in container B. What are the possible solvents in containers A and B? A) A - water; B - carbon tetrachloride B) A - carbon tetrachloride; B - water C) A - bromine; B - oil D) A - oil; B - bromine
Chemistry
2 answers:
snow_tiger [21]2 years ago
3 0
Ammonia and table salt dissolves in polar solvents, so A is water,
CO2 and hexane are non-polar substances, so they are going to be dissolved in non-polar solvent, so I think it is going to be carbon tetrachloride

Answer is <span>A) A - water; B - carbon tetrachloride

Table salt does not dissolve in oil and CCl4, and Br2 is too active and it is going to react with NH3.</span>
Lady_Fox [76]2 years ago
3 0
The solvent for ammonia and table salt is water and the solvent for hexane and carbon dioxide is carbon tetrachloride. SO the answer is A
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what temperature change will be observed if a sample of 100 g of ethylene glycol antifreeze solution (specific heat capacity = 3
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Answer:

1°C temperature change will be observed if a sample of 100 g of ethylene glycol antifreeze solution.

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3 years ago
The half-life of nitrogen-13 is 10.0 minutes. if you begin with 53.3 mg of this isotope, what mass remains after 25.9 minutes ha
zimovet [89]

Hello!

The half-life is the time of half-disintegration, it is the time in which half of the atoms of an isotope disintegrate.

We have the following data:

mo (initial mass) = 53.3 mg

m (final mass after time T) = ? (in mg)

x (number of periods elapsed) = ?

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Let's find the number of periods elapsed (x), let us see:

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10.0\:x = 25.9

x = \dfrac{25.9}{10.0}

\boxed{x = 2.59}

Now, let's find the final mass (m) of this isotope after the elapsed time, let's see:

m =  \dfrac{m_o}{2^x}

m =  \dfrac{53.3}{2^{2.59}}

m \approx \dfrac{53.3}{6.021}

\boxed{\boxed{m \approx 8.85\:mg}}\end{array}}\qquad\checkmark

I Hope this helps, greetings ... DexteR! =)

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What isotope is used for a standard for other atomic masses?
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