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vovangra [49]
3 years ago
7

6. What is the production of a magnetic field by electric current called.

Chemistry
1 answer:
nirvana33 [79]3 years ago
5 0
The answer is electromagnetism.

The definition of electromagnetic is:
relating to the interrelation of electric currents or fields and magnetic fields.

Therefore, the verb form of electromagnetic would be ELECTRONAGNETISM
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Acetic acid is a weak acid with a pKa of 4.76. What is the concentration of acetic acid in a buffer solution of 0.2M at pH 4.9.
masya89 [10]

Answer:

0.084 M

Explanation:

Using the Henderson-Hasselbalch equation for a buffer ( a buffer is solution contain a weak acid and it conjugate base; the solution resist change in pH)

pH = pKa + log ( base/acid)

4.9 - 4.76 =log ( base / acid)

10^0.14 =  ( base / acid)

1.38 = (base / acid)

since there is 0.2 M in the buffer solution

the concentration of acid =  \frac{1}{(1+1.38)} × 0.2 = 0.084 M

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