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3 years ago

a 0.500 M. solution is to be diluted to 500.0 mL of a 0.150 M soulution. How many mL of the 0.500 M solution are required

Chemistry

1 answer:

Nastasia [14]3 years ago

5 0

Http://www.wasatch.edu/cms/lib/UT01000315/Centricity/Domain/647/dilution%20problems%20answers.pdf it would be question 5 if you can read it.

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During resperation______.

Vikki [24]

D. oxygen is used to break down glucose into energy

Explanation:

During respiration, oxygen is used to break down glucose into energy:

C₆H₁₂O₆ + O₂ → CO₂ + H₂O + energy

In the process of respiration, oxygen gas combines with glucose to liberate energy.

Respiratory system in the body is responsible for the metabolic break down of food to provide energy for the working of the human body.
Chemical energy in glucose is broken down to produce other forms of energy most especially heat.
The by product is usually carbon dioxide and water vapor.

Learn more:

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3 years ago

What is the number of electrons and protons can be seen in this atom?

pochemuha

Explanation:

the number of electrons = 8

and protons = 8 can be seen in this atom

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3 years ago

How does increasing temperature affects reaction rate?

valkas [14]

Answer: It increases the reaction rate.

Step-by-step explanation:

The particles gain kinetic energy.

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3 years ago

To indicate the pH of a substance, one can use a dye that is both an acid and that appears as different colors in its protonated

PIT_PIT [208]

Answer:

<em>The pH of the solution is 7.8</em>

Explanation:

The concentration of the solution is 0.001M and the dye could be in its protonated and deprotonated forms. If the concentration of the protonated form [HA] is 0.0002 M the concentration of the deprotonated form will be the subtraction between the concentration of the bye and the concentration of the protonated form:

[A-] = 0.001M - 0.0002M = 0.0008M

Also, the Henderson-Hasselbalch equation is

$pH = pKa + Log \frac{[A^{-}]}{[HA]}$

this equation shows the dependency between the pH of the solution, the pKa and the concentration of the protonated and deprotonated forms. Thus, replacing in the equation

$pH = 7.2 + Log \frac{0.0008M}{0.0002M} = 7.8$

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3 years ago

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aksik [14]

Answer:

Explanation:

because 14 - 6 is 8

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3 years ago