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Firlakuza [10]
3 years ago
12

"Using a low-flow shower head instead of a high-flow shower head saves about 3 gallons of water per minute." Who is the most rel

iable source of this information? (1 point)
A) a farmer
B) a politician
C) a scientist
D) a meteorologist
Chemistry
2 answers:
Ymorist [56]3 years ago
7 0
C a scientist because they would be the ones who are most qualified to do the experiment and get accurate results
Westkost [7]3 years ago
3 0

Answer:

C). Scientist

Explanation:

Scientist are technical persons and they can understand the language of science and measurements. The sentence, "Using a low - flow shower instead of a high - flow shower heads saves about 3 gallons of water per minute."

So by the language the above sentence is purely technical language. It says we can save approximately 3 gallons of water in one minute if we choose to use a low flow height instead of using high flow height of water shower flow.

A farmer, a politician or a meteorologist may not find some useful information from the above sentence. Hence the answer is Scientist.

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Elza [17]

Answer: There are 21.08\times 10^{23} molecules in 63.00 g of H_2O

Explanation:

According to avogadro's law, 1 mole of every substance occupies 22.4 L at STP and contains avogadro's number 6.023\times 10^{23} of particles.

To calculate the moles, we use the equation:

\text{Number of moles}=\frac{\text{Given mass}}{\text {Molar mass}}=\frac{63.00g}{18g/mol}=3.5moles

1 mole of H_2O contains =  6.023\times 10^{23} molecules

Thus 3.5 moles of H_2O contains =  \frac{6.023\times 10^{23}}{1}\times 3.5=21.08\times 10^{23} molecules.

There are 21.08\times 10^{23} molecules in 63.00 g of H_2O

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3 years ago
Which cell structures does this fish embryo cell contain? Select all that apply.
Katyanochek1 [597]

Answer:

Nucleus,mitochondria,& cell membrane

6 0
3 years ago
Glucose is an important sugar in many biochemical reactions what is the molarity of a solution that contains 500 grams of glucos
slava [35]
Number of moles :

500 / 180.16 => 2.775 moles

Volume = 0.72 L

M = n / V

M = 2.775 / 0.72

M = 3.85 M

hope this helps!
7 0
3 years ago
Read 2 more answers
Please help!
Arada [10]

Answer:

The answer is NO

Explanation:

In every compound, the sum of oxidation number between the elements is 0.

  • In NO, nitrogen acts with +2 and oxygen as usual acts with -2
  • In N₂O₃, nitrogen acts with +3 and oxygen, -2
  • In NO₂, nitrogen acts with +4, and oxygen -2
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Is that high school stuff or college?
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