A student is given a mixture of NaCl(s) and NaNO3(s) and is tasked with determining the percent of NaCl in the mixture. The student dissolves 3.613 g of the mixture in 50 mL of DI water. The student then adds excess AgNO3(aq) to precipitate the chloride ion as AgCl(s). The student determines that 2.268 g of AgCl is formed.

25.60% of NaCl in the mixture

Explanation:

With the amount of AgCl produced we can now the moles of Cl⁻ = Moles of NaCl. With these moles we can now the mass of NaCl and, as total mass was 3.613g, it is possible to determine mass percent of NaCl in the mixture.

Moles NaCl:

2.268g AgCl * (1mol / 143.32g AgCl) = 0.01582 moles AgCl

Molar mass AgCl 143.32g/mol

0.01582 moles AgCl = Moles Cl⁻ = Moles NaCl

Mass NaCl (Molar mass: 58.44g/mol):

0.01582 moles NaCl * (58.44g / mol) = 0.9248g NaCl in the mixture

Mass percent:

(0.9248g NaCl / 3.613g) * 100 =

Dr. King's main conception is the law is again being inequitable. Dr. King in paragraph 4 tells why he got apprehended and how the law is being inequitable,  " Now there is nothing wrong with an ordinance which requires a permit for a parade, but when the ordinance is used to preserve segregation and to deny citizens the First Amendment privilege of peaceful assembly and peaceful protest, then it becomes unjust."

In paragraph 6 Dr. King utilizes what Hitler did in Germany and shows how even back in that time it was inequitable. " It was "illegal" to aid and comfort a Jew in Hitler's Germany."   When he tells us that, it shows how racist and inequitable those times were.

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