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rjkz [21]
3 years ago
7

A que llamamos niveles y subniveles de energia?

Chemistry
1 answer:
Softa [21]3 years ago
4 0

Answer:

agua

Explanation:

por que estamos en la planeta

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As the temperature of water increases its density
fiasKO [112]

Answer:

B

Explanation:

The warmer the water, the more space it takes up, and the lower its density.

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2 years ago
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Calculate the pH of a buffer solution prepared by mixing 75.0 mL of 1.00 M lactic acid and 25.0 mL of 0.50 M sodium lactate.
max2010maxim [7]

From the calculations, the pH of the buffer is 3.1.

<h3>What is the pH of the buffer solution?</h3>

The  Henderson-Hasselbach equation comes in handy when we deal with the pH of a buffer solution. From that equation;

pH = pKa + log[(salt/acid]

Amount of the salt = 25/1000 *  0.50 M = 0.0125 moles

Amount of the acid = 75/1000 *  1.00 M = 0.075 moles

Total volume = ( 25 + 75)/1000 = 0.1 L

Molarity of salt = 0.0125 moles/0.1 L = 0.125 M

Molarity of the acid = 0.075 moles/0.1 L = 0.75 M

Given that the pKa of lactic acid is 3.86

pH = 3.86 + log( 0.125/0.75)

pH = 3.1

Learn more about pH:brainly.com/question/5102027

#SPJ1

6 0
2 years ago
In the reaction 4Al+3O2→_Al2O3 , what coefficient should be placed in front of the Al2 to balance the reaction?
nika2105 [10]

Sorry I came a lil late,

The answer to your question is, 2.

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3 years ago
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PLEASE ANSWER
lisov135 [29]

Answer:

B.

Explanation:

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Cavendish bananas are a popular species among banana growers because there predictable . All these bananas are grown to have the
vladimir2022 [97]

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B. They are clones of the parent plant

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