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saw5 [17]
2 years ago
11

1.25 is closer to 1.04 or not ? plz heelp

Chemistry
1 answer:
konstantin123 [22]2 years ago
3 0

Answer:

No.

Step-by-step explanation:

When looking at numbers after the decimal point, think of the numbers as real numbers.

In 1.25, think of the .25 as just 25.

Since this is after the decimal point, it is 25 of a 100.

Now, is 25 closer to 4 or not?

Of course, the number has a great distance from 4.

<em>-kiniwih426</em>

Read more on Brainly.com - brainly.com/question/25432061#readmore

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A buffer is made that is .10M propanoic acid (pKa = 4.9) and .05M sodium propanoate. Calculate the pH.
inna [77]
PKa= 4.9 therefore ka= 10^-4.9=  1.259x10^-5

ka= \frac{[H^+][CH3CH2COO^-]}{[CH3CH2COOH]}

[CH3CH2COO^-]&#10;= 0.05
[CH3CH2COOH]= 0.10

Therefore 1.259x10^-5 = \frac{[H^+][0.05]}{[0.1]}
Rearrange the equation to make the concentration of hydrogen the subject.
Therefore [H^+] =  \frac{(1.259*10^-5)(0.1)}{0.05}

Therefore [H^+]= 2.513*10^-5

pH= -log [H^+] = -log(2.513*10^-5)= 4.59.
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3 years ago
What is the coordination number for atoms that pack within the diamond cubic crystal structure?.
irga5000 [103]

Coordination numbers are defined for the crystalline structures that tell about the numbers of atoms bonded to the central atom. The coordination number of a diamond is 4.

<h3>What is a coordination number?</h3>

A coordination number has been defining the number of the ions, atoms, and molecules that are bonded to the central atom of the crystalline compound or a complex.

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Therefore, the diamond has a coordination number of 4.

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~Plz tap the crown~

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