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erastova [34]
3 years ago
5

If a particular process is endothermic, the reverse process must be a (an) chemical change. exothermic process. endothermic proc

ess. isothermal process. none of the above
Chemistry
2 answers:
KatRina [158]3 years ago
7 0
If a particular process is endothermic, the reverse process must be an
exothermic process. This is because, when the endothermic process
occurs, the substance takes energy from its surroundings. The reverse
of this reaction would be for the substance to release energy into its
surrounding. Therefore, the answer is exothermic.
Sauron [17]3 years ago
4 0

Answer:

The correct answer is none of the above.

Explanation:

If a particular process is endothermic, there can be no assurance that the reverse process is exothermic, since some exothermic processes do not occur at certain pressures and temperatures. In general, the pressure and temperature conditions under which the reverse process is performed should be established.

Have a nice day!

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1826.5g of methanol (CH3OH), molar mass = 32.0 g/mol is added to 735 g of water, what is the molality of the methane 0.0348 m 1.
Snowcat [4.5K]

Answer:

Molality = 1.13 m

Explanation:

Molality is defined as the moles of the solute present in 1 kilogram of the solvent.

Given that:

Mass of CH_3OH = 26.5 g

Molar mass of CH_3OH = 32.04 g/mol

The formula for the calculation of moles is shown below:

moles = \frac{Mass\ taken}{Molar\ mass}

Thus,

Moles= \frac{26.5\ g}{32.04\ g/mol}

Moles\ of\ CH_3OH= 0.8271\ moles

Mass of water = 735 g = 0.735 kg ( 1 g = 0.001 kg )

So, molality is:

m=\frac {0.8271\ moles}{0.735\ kg}

<u>Molality = 1.13 m</u>

4 0
3 years ago
What element is represented by [Rn]7s1?
lara [203]

Answer:

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Explanation:

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In a fluorine atom, on which energy level are the valence electrons found?
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Answer:

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This can be easily found through the electronic configuration of atom.

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We can see that the valence electrons are present in second energy level of F atom.

There are seven valence electrons of fluorine.

It is called halogens.

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4. fluorine has pungent smell.

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