Summarize how the actions of the heartbeat make their first and second sounds.

1 answer:

7 0

When the blood is pumped from the right ventricle to the pulmonary artery.. the "lubb" sound is heard... while ..when the oxygenated blood is pumped by the left ventricle to the aorta.. a larger "dubb" sound is heard...

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If a color blind man marries a woman who is homozygous for normal vision. it is possible that one of their sons could be color b

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Black coffee has a pH around 5; hand soap has a pH of 10. How many times more acidic is coffee relative

Anon25 [30]

Answer:

$\boxed {\boxed {\sf 10^5 \ or \ 100,000 \ times \ more \ acidic}}$

Explanation:

The pH scale stands for the power or potential of hydrogen. It measures how acidic or basic a solution based on the concentration of hydrogen ions and a scale from 1 to 14.

This scale is unique because it is logarithmic. So, every time the pH changes by 1 on the scale, the actual concentration of the solution increases or decreases by a tenfold.

So, a solution with a pH of 7 is ten times more acidic than a solution with a pH of 8. This can be translated to:

$10^ {difference \ in \ pH}$

The black coffee has a pH of 5 and the hand soap has a pH of 10. We want to find how many times more acidic coffee is, so we subtract 5 from 10 and get 5. The difference in pH is 5.

$10^5=100,000$

Coffee is <u>10⁵ or 100,000 times more acidic than hand soap.</u>

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Answer: They move during that time because of the fact that the earth move around one its axis around the sun.

Explanation:

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14. What does that leave as the source for the energy that is now in the food molecule?

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chemical enrgy??

Explanation:

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Hope this helps, I love Science.

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