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ella [17]
3 years ago
13

1. Nutrients move from the digestive system into the blood by traveling through ___________, tiny tubes sticking out of the wall

of the small intestine.
2. In the body's excretory system, urea and water travel from the blood into the kidneys and diffuse into __________
Biology
1 answer:
Helga [31]3 years ago
6 0

Answer and Explanation:

Nutrients move from the digestive system into the blood by traveling through villi, tiny tubes sticking out of the wall of the small intestine.

2. In the body's excretory system, urea and water travel from the blood into the kidneys and diffuse into collecting ducts

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Answer:

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PLEASE HELP ME ASAP. Classify the energy sources as either renewable or nonrenewable. A. energy obtained from coal B. energy obt
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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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