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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ANSWER:
75 emails.
Trey has to answer a total of 75 emails.
STEP-BY-STEP EXPLANATION:
If:
20% of emails = 15
Then:
20% × 5 = 15 × 5
100% of emails = 75
Answer:
The answer is D, The Puritans were enraged.
Explanation:
The reason for the speakers interruption of the narrative was to; dramatize the overwhelming beauty that is revealed as Pan begins to play
<h3>What is the aim of the speaker?</h3>
This question is taken from a poem that shows a dramatic retelling of a mythological story that resonates with the speaker's experience.
In the poem, we see the speaker in line 21 talk about the reed's pith as being "like the heart of a man" to show the pan's casual cruelty.
However, in lines 31 to 33, the interruption of the pace of the narrative was in order to dramatize the overwhelming beauty that is revealed as Pan begins to play.
Read more about aim of speaker at; brainly.com/question/17543484
Heat can be transferred in three ways: by conduction, by convention, and by radiation. Conduction is transferred of energy from one molecule to another by direct contact.
