Considering the definition of percentage by mass, the mass of ammonium sulfate that must be added to prepare 200.0 g of a 3.5% solution of ammonium sulfate in water is 7 g.
<h3>Percentage by mass</h3>
The percentage by mass expresses the concentration and indicates the amount of mass of solute present in 100 grams of solution.
In other words, the percentage by mass of a component of the solution is defined as the ratio of the mass of the solute to the mass of the solution, expressed as a percentage.
The percentage by mass is calculated as the mass of the solute divided by the mass of the solution, the result of which is multiplied by 100 to give a percentage. This is:
<h3>Mass of ammonium sulfate</h3>
In this case, you know:
- mass of ammonium sulfate= ?
- mass of solution= 200 g
- percent by mass= 3.5 %
Replacing in the definition of percent by mass:
Solving:
3.5÷100=
0.035=
0.035×200 g= mass of ammonium sulfate
<u><em>7 g= mass of ammonium sulfate</em></u>
Finally, the mass of ammonium sulfate that must be added to prepare 200.0 g of a 3.5% solution of ammonium sulfate in water is 7 g.
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Explanation:
It is known that atmospheric pressure is equal to 760 torr.
And, at atmospheric pressure that is, 760 torr the boiling point of pure water is 100 degree celsius.
So, calculate the boiling point of pure water at 653.7 torr as follows.
=
=
Therefore, we can conclude that the boiling point of pure water at 653.7 torr is .
Answer:
Photosynthesis can increase the pH level of the water and the reason is because it removes carbon dioxide that is present in the water.
Explanation:
Photosynthesis is a chemical process/cycle that is executed by plants by consuming carbon dioxide and releasing oxygen into the air or water.
The photosynthesis can cause the pH level of the water to rise because of the removal of carbon dioxide from the environment.
I hope this answer helps.
Answer:
Beaker
Explanation:
The correct answer is Beaker