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san4es73 [151]
3 years ago
7

Topic: elements please help!! i’ll give a brainiest:)

Chemistry
1 answer:
aleksklad [387]3 years ago
8 0
#2 is solid because most exist naturally as solids
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If an equilibrium mixture of the three gases at 600K contains 2.92*10^-2 M COCH(g) and 1.76*10^2 M CO, what is the equilibrium
Vlad [161]

Answer:

C

Explanation:

7 0
3 years ago
If you had a mixture of ethanol, glycerol, ethylene glycol, methanol, and water, how could you separate these five substances ou
leonid [27]

Fractional distillation

Explanation:

The best way to separate the mixtures out is through the process of fractional distillation.

In fractional distillation, liquid - liquid mixtures are separated based on the differences in boiling point of their components. Let us examine the boiling points of the component of the mixtures:  

     Ethanol                  78⁰C

     Glycerol                290⁰C

     Ethylene glycol     197.6⁰C

     Methanol               64.7⁰C

     Water                     100⁰C

We see that the liquids in the mixture have different boiling points. In this process, the mixture is heated in a distillation column. When the boiling point of any component is reached, it will rise up in the column and can be channeled to a condenser where it is cooled and collected.

The liquid with the least boiling point is first separated with the one with the highest boiling is recovered last:

   Order of recovery;

               Methanol               64.7⁰C

               Ethanol                  78⁰C

                Water                    100⁰C

               Ethylene glycol     197.6⁰C

                Glycerol                290⁰C

Learn more:

Physical properties brainly.com/question/10972073

#learnwithBrainly

3 0
3 years ago
During a change of state, the temperature of a substance _____.
Natali5045456 [20]
Hello,

Your questions states:

During a change of state, the temperature of a substance _____?

In which you gave us some choices:

A. decreases if the arrangement of particles in the substance changes.
B. remains constant until the change of state is complete.
C. increases if the kinetic energy of the particles in the substance increases.
D. increases during melting and vaporization and decreases during freezing and condensation.

Your answer would be:

B. remains constant until the change of state is complete.

Your explanation/Reasoning:

It absorbs the energy, then after the phase changes it then increases the temperature all over again.

Have a nice day:)

Hope this helps!

~Rendorforestmusic
4 0
4 years ago
Read 2 more answers
Which of the following would result in decreased entropy?
maria [59]
B ice melting hope it helps

4 0
4 years ago
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Name two different signs of a chemical reaction
olasank [31]
A change in temperature or color are two signs that a chemical reaction has taken place.
7 0
4 years ago
Read 2 more answers
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