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MrRa [10]
3 years ago
9

Which of the following statements is true?

Chemistry
1 answer:
sp2606 [1]3 years ago
3 0
Kinetic energy on mass. gravity, and speed
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Evaporation is commonly used to concentrate dissolved solids in a liquid feed stream and produce pure water vapor.
Sergio [31]

Answer:

True

Explanation:

Evaporation is the process by which a substance changes its state from liquid to gas. evaporation occurs at all temperatures but it's rate increases as temperature increases.

Pure water vapour can be produced by evaporation.

As the liquids are removed, the solids present in solution becomes more concentrated.

7 0
3 years ago
In the graph above for the dissociation of a strong acid, why do the bars for H3O+ and A- have the same height as the bar for HA
dimaraw [331]

Answer:

The concentration of HA is the same as concentration of H3O+ and A- produced.

Explanation:

The dissociation equation is given below:

HA(aq) + H2O (l) —> H3O+(aq) + A-(aq)

From the reaction above, we can see that the acid is monoprotic acid i.e it has only 1 ionisable hydrogen atom.

Now, from the balanced equation, we can see that the acid produced equal concentration of H3O+ and A-.

This account for the reason why the bars for H3O+ and A- have the same height as the bar for HA.

6 0
3 years ago
Which equation obeys the law of conservation of mass?
valina [46]
4Fe + 3O2 -> 2 (Fe2O3)

Both sides have 4Fe and 6O.
7 0
3 years ago
Read 2 more answers
Which action must occur for an enzyme to catalyze a chemical reaction?
Butoxors [25]

Answer:

correct substrate to bind the active site of the enzyme.

Explanation:

For an enzyme to catalyze a chemical reaction it is very essential for the correct substrate to bind the active site of the enzyme.

The Active site consists of two parts

1.Binding site

2. Catalytic site

The binding site consists of amino acid residues that bind to the correct substrate while the catalytic site has the amino acids that lead to the catalysis.

The active site's shape is such that only the right substratum easily binds to it and thus the catalytic reaction occurs.

4 0
3 years ago
Pete drives 150 meters in 18 seconds what is his speed in meters per second
Vladimir [108]

Well, you would have to divide 150 metres by 18 seconds.

150/18 = 8 1/3 m/s OR 8.333 m/s

4 0
3 years ago
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