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Paraphin [41]
3 years ago
8

When the water level of a stream or river exceeds its natural banks, it has reached its

Chemistry
2 answers:
Tom [10]3 years ago
8 0
The answer is B. 
The water level has risen over the banks. which means the water is overflowed. 
laiz [17]3 years ago
4 0
B. Flood stage. Hope this helps.
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Anna35 [415]

Answer:

moles = given mass/atomic mass

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2 years ago
What caused wind to blow
Arlecino [84]

Answer:

Different atmospheric pressure. When there is a different atmospheric pressure, air moves from the higher pressure to the lower pressure area which results in what you call <u>WIND</u> but can result in various speeds and pressure.

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3 years ago
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How many moles of helium are 8.84×1024 atoms of He?
insens350 [35]

Answer:

14.68 moles of He

Explanation:

To do this, just remember Avogadro's Constant or Avogadro's number. This constant tells us how many units ( in this case atoms) there are in a mole of ANY type of substance.

Avogadro's constant is 6.022140857 × 10²³ units per mole.

Now that we know how many atoms there are in 1 mole, we can use this as our conversion factor.

8.84 x 10²⁴ atoms of He →  moles of He

8.84\times10^{24} atoms of He\times\dfrac{1moleofHe}{6.022140857\times10^{23}atomsofHe}=14.68molesofHe

So the answer would be:

14.68 moles of He

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2 years ago
How a cold front affects weather.
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A cold front forms when a cold air mass pushes into a warmer air mass. Cold fronts can produce dramatic changes in the weather. ... As the cold front passes, winds become gusty. There is a sudden drop in temperature, and also heavy rain, sometimes with hail, thunder, and lightning.

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What is true of a scientific law?
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