Considering the definition of percentage by mass, the sample of pure lithium nitrate contains 7.99% lithium by mass.
<h3>Definition of 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>This case</h3>
Because percent by mass indicates the ratio of solute to solution based on mass, if the sample has twice the mass of the first sample, the ratio remains constant.
So the percentage by mass is the same.
That is, the sample of pure lithium nitrate contains 7.99% lithium by mass.
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"How Sugar Changed the World”was a book written by Heather Whipps. The authors’ purpose in this passage
- To inform the reader that Louisiana's short harvest season meant that enslaved people were cruelly overworked.
The book convey the idea, that sugar has had a positive and negative impact on the world.
The Slaves did labored in the fields and the boiling houses, supplying the huge amounts of labor that sugar needed.
Conditions were the slaves worked was harsh, and mortality rates were very high through all stages of slaves' lives.
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Aerobics exercise are practice or training routines which is aimed at strengthening the muscles and aiding general fitness. Aerobic exercises performed in a water or pool, they are called water aerobics or aquatic fitness routines.
Hence, <em>swimming laps are not a form of aerobics</em>. Hence, the Statememt is false.
Swimming is a sport on its own which is performed inside a pool. Water aerobics however are performed in shallow waters and are meant to improve aquatic fitness. Water aerobic routines include ; <em>Water yoga, Zumba and aqua jog</em>.
Therefore, swimming is not a water aerobic routine.
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Answer: A) it provides each brand with its own powers and responsibilities
Explanation: got it right on edge :)
1 mol KMnO₄ contains 4 mol O, which has a molar mass of about 15.999 g/mol. Then the mass of O in the sample is
(4 mol) (15.999 g/mol) ≈ 63.996 g
