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Ivenika [448]
3 years ago
14

A variable that is kept the same through the experiment to make the test fair

Chemistry
1 answer:
sveta [45]3 years ago
3 0
It would be the controlled variable, which is a baseline to compare your other variables too.

Hope this helps!
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Which of the solutions have greatest osmotic pressure 30% sucrose 60% sucrose or 30% magnesium sulfate?
zaharov [31]
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3 years ago
3)<br>0.09 moles of sodium sulfate in 12 mL of solution.<br>​
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Answer:

7.5 M

Explanation:

In order to find a solution's molar concentration, or molarity, you need to determine how many moles of solute, which in your case is sodium sulfate,  

Na

2

SO

4

, you get in one liter of solution.

That is how molarity was defined -- the number of moles of solute in one liter of solution.

So, you know that you have  

0.090

moles of solute in  

12 mL

of solution. Your goal here will be to scale up this solution by using this information as a conversion factor to help you determine the number of moles of solute present in

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