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sasho [114]
3 years ago
6

Levi is conducting a comparative experiment where he is comparing the average temperature in cities and nearby rural areas. He f

inds that cities are on average one degree warmer than rural areas. What is a major limitation of his experiment?
A) Large amounts of information can be gathered.
B) It is repeatable.
C) He can not definitively show what causes the difference.
D) There is an independent variable and a dependent variable.
Chemistry
1 answer:
alukav5142 [94]3 years ago
3 0

The major limitation is that C) he can not definitively show what causes the difference.

It may be caused by <em>something the people are doing</em> (if so, what?) or it may be caused by <em>some environmental differences</em> or a<em> combination of both</em>.


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Answer: False

Explanation:

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Determine the molarity of a solution that contains 30 moles naoh in 0.80 liters of solution?
UkoKoshka [18]

Taking into account the definition of molarity,  the molarity of a solution that contains 30 moles naoh in 0.80 liters of solution is 37.5 \frac{moles}{liters}.

<h3>Definition of molarity</h3>

Molar concentration or molarity is a measure of the concentration of a solute in a solution and indicates the number of moles of solute that are dissolved in a given volume.

The molarity of a solution is calculated by dividing the moles of solute by the volume of the solution:

Molarity=\frac{number of moles}{volume}

Molarity is expressed in units \frac{moles}{liters}.

<h3>This case</h3>

In this case, you have:

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  • volume= 0.80 L

Replacing in the definition of molarity:

Molarity=\frac{30 moles }{0.80 L}

Solving:

<u><em>Molarity= 37.5 </em></u>\frac{moles}{liters}<em />

Finally, the molarity of a solution that contains 30 moles naoh in 0.80 liters of solution is 37.5 \frac{moles}{liters}.

Learn more about molarity:

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