3 years ago

Why can you only change 1 variable in an experiment??? #Science

1 answer:

Montano1993 [528]3 years ago

7 0

<span>It is important to test only one variable when conducting an experiment because that one variable will only have one change. You want to know whether or not that one change is what caused the outcome of the experiment. If you use too many you don't know what really caused the outcome.</span>

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What is the ph of 0.09m solution of HBr

fomenos

Answer: 1.05

Explanation:

On ionization, hydrobromic acid completely dissociates into hydrogen ion and bromine ion. The equation is stated below

HBr <--> H+ + Br-

Recall that pH = - log(H+)

Concentration of hydrogen ion (H+) = 0.09M

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pH = - (-1.05)

pH = 1.05

The pH of 0.09M solution of HBr is 1.05. Thus, it is highly acidic.

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