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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Learn more about percent by mass:
brainly.com/question/18646836?referrer=searchResults
The way in which the speaker’s repetition of the neighbor’s cherished belief about the importance of walls conveys the poem’s criticism of an undesirable social pattern is that;
The speaker treats the neighbor’s words about fences as evidence of a worldview that is closed-minded in general.
This question is drawn from a poem titled "Mending Wall" written by Robert Forst in the 20th Century.
- The major theme of the poem is the self imposed barriers that prevent human interaction. This was illustrated by the speaker's neighbor who kept on rebuilding a wall that was not required. This was because it didn't benefit anyone and as such the fence was harmful to their land.
- While speaking about the neighbors cherished belief of fence walls in lines 27 and 45, the speaker treats the neighbor’s words about fences as an evidence of him having a worldview that is largely closed-minded.
Read more about the poem mending wall at; brainly.com/question/1355477
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