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kakasveta [241]
3 years ago
10

What is this what is this

Chemistry
1 answer:
monitta3 years ago
5 0

Answer:Attemted Failed

Maybe try to search

In a different way like:

what is the ingredient of cake

Instead of

how to make Cake

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A student is given a solution of phenol red of unknown concentration. Solutions of phenol red are bright pink under basic condit
azamat

The  hydrogen ion concentration, [H ], in the solution of phenol red solution of pH 11.20 is 6.3 X 10^{-12} moles/litre.

Explanation:

Data given:

basic solution of phenol red is given as it has pH of 11.2

hydrogen ion concentration = ?

the hydrogen ion concentration is calculated by using the following formula:

pH = -log_{10} [H^{+}]

Rearranging the equation:

[H^{+}]  = \frac{1}{10^{pH} }

Putting the values in the above equation:

[H^{+}] = \frac{1}{10^{11.2} }

[H^{+}] = 6.3 X 10^{-12} moles/litre

The hydrogen ion concentration is very small and the solution of phenol red is basic in nature. The pH of 11.2 also indicates that solution is basic and teh color of the solution is bright pink.

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4 years ago
Why is graphite used for electrodes?
scZoUnD [109]

Answer:

Graphite is an electrical conductor, hence useful in such applications as arc lamp electrodes. It can conduct electricity due to the vast electron delocalization within the carbon layers (a phenomenon called aromaticity). These valence electrons are free to move, so are able to conduct electricity.

8 0
3 years ago
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Quick Chemistry question, please show work :) 3. If 25.0 mL of a 4.525 M solution of HCl was poured into 112.0 mL of distilled w
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The total mole number of solutes will not change. So it is 25 * 10^-3 *4.525 mole. And the final volume is 25+112 = 137 mL. So the resulting concentration is mole number / volume=0.8257 M.
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Select each correct answer. More than one answer may be correct. British scientist John Dalton is best known for his atomic theo
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I thank the answers are A and C.
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Type the correct answer in the box. Express your answer to two significant figures. You are performing a reaction with 1.7 moles
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Answer:

1.34 34343 he did

Explanation:

i did the test

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3 years ago
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