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max2010maxim [7]
3 years ago
7

How does a chemical reaction obey the law of conservation of matter?

Chemistry
1 answer:
Sunny_sXe [5.5K]3 years ago
4 0

Answer:

Normally, it explains that matter cannot be created or destroyed. It demonstrates different chemical reactions that help show the different transformations of the matter but will never destroy it or create it.

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Which veriable should he change, measure and control (temp of water, volume of water and mass of sodium chloride that dissolve )
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I would say
change: Temp
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Tell how many atoms of each element are in one molecule of the substance of table salt
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Explanation:

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Consider the following chemical reaction of bromothymol blue indicator. It appears yellow in undissociated form and blue in its
TiliK225 [7]

The addition of hydrogen carbonate to bromothymol blue turns the solution blue. Thus, option B is correct.

The balanced equation for the dissociation of bromothymol blue is:

\rm HC_2H_3O_2\;\leftrightharpoons H^+\;+\;C_2H_3O_2^-

The color of dissociated form is yellow and undissociated form is blue.

<h3>What is the final color of solution?</h3>

The addition of hydrogen carbonate results in the dissociated ions as:

\rm H_2CO_3\;\rightarrow\;2\;H^+\;+\;CO_3^-

The dissociation results in the increased hydrogen ion concentration. The undissociated form in the reaction mixture increases.

Thus, the color of the solution will turn blue. Hence, option B is correct.

Learn more about bromothymol blue, here:

brainly.com/question/24319054

6 0
2 years ago
List four reasons why the temperature of a flame is lower than the adiabatic flame temperature."
Nutka1998 [239]

Answer:

substances is never entirely a one way

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no possibility of obtaining complete combustion at hig

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always loss of heat from the temperature

its temperature is lower than the constant volume process because some of the energy is utilized to change the volume of the system

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