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3 years ago

8

Do Birds Really Abandon Their Chicks If Humans Touch Them? 25 points!!

1 answer:

Lerok [7]3 years ago

5 0

Answer:

no

Explanation:

"According to folklore, birds will reject their eggs and young if humans have so much as laid a finger on them. ... No matter how flighty birds appear, they do not readily abandon their young, especially not in response to human touch, says Frank B. Gill, former president of the American Ornithologists' Union."

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Lapatulllka [165]

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You measure the pH of your backyard soil and find it is 7. You measure the pH of your friend's backyard soil and find it is 4. H

olchik [2.2K]

Answer:

1000 times.

Explanation:

Hello,

In this case, since the pH is defined by:

$pH=-log([H^+])$

If we want to compute the concentration of hydrogen we must write:

$[H^+]=10^{-pH}$

Thus, for both the backyard soils we compute:

$[H^+]_{pH=7}=10^{-7}=1x10^{-7}M$

$[H^+]_{pH=4}=10^{-4}=1x10^{-4}M$

It means that:

$\frac{[H^+]_{pH=4}}{[H^+]_{pH=7}} =\frac{1x10^{-4}M}{1x10^{-7}M}\\ \\\frac{[H^+]_{pH=4}}{[H^+]_{pH=7}}=1000$

It means that the concentration of hydrogen at a pH of 4 is 1000 times greater than the concentration of hydrogen at a pH of 7.

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3 years ago

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nataly862011 [7]

Answer:

D

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Paul [167]

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