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Sergeeva-Olga [200]
3 years ago
12

How old is the sun. ​

Advanced Placement (AP)
1 answer:
svlad2 [7]3 years ago
5 0

Answer:

4,5 billion to 5 billion years

Explanation:

<u>Sun is estimated to be around 4,5 billion years old. </u>

This is determined by dating the material find in meteorites coming from the space. The solar system has formed at the same time, from the same molecular cloud. That is why the material from the lunar samples was used to see how old is the Sun. The method used is called Rubidium–strontium dating method because it the isotopes of elements of <em>rubidium </em>(Rb) and <em>strontium </em>(Sr) are analyzed and dated.

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John Rolfe brought tobacco seeds to Jamestown Colony in 1610.

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If a 10% sucrose solution within a semipermeable sac causes the fluid volume in the sac to increase a given amount when the sac
guapka [62]
Osmosis is the net movement of water molecules through a semi-permeable memberane from a region of higher water potential to a region of lower water potential.

so in the first case, since 10% of sucrose solution has a lower water potential than the pure water, so water molecules will flow into the sac, causing the sac to increase in volume. note that sucrose molecules can't diffuse out since there's a semi-permeable membrane.

in the question, I'm not 100% sure what the "sac solution" is meant by, but I guess it's the solution inside the sac

so here if the sac sucrose is 20%, the concentration of water is larger in difference than the first time, so osmosis rate will increase.

but if the "sac solution" is meant by replacing the water of the first case, then the sac inside would have a higher water potential, as the sucrose concentration is more diluted. then the water molecules will flow from the sac back to the beaker or whatever container it is.
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3 years ago
There are sixty cups on a table. If one falls down, then how many remain?
marta [7]

59 is the answer becaus 60-1=59

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When did Tennessee become a state?
kondor19780726 [428]

Answer: June 1, 1796

Explanation: Hope this helped

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Question 8 (4 points)
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Meztizo is a ethnic group in Spain. I think it is the answer.

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