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serg [7]
3 years ago
11

A student investigates the properties of an unknown liquid substance in a beaker. The student finds the substance has a mass of

56.2 g and a volume of 42.3 mL. The liquid has a yellow, translucent appearance. The liquid has a freezing point of 13°C and a boiling point of 105°C. When the liquid boils, a white powder residue is left in the beaker. What conclusion can the student make based on the evidence collected?
Chemistry
1 answer:
shtirl [24]3 years ago
8 0

Answer:

The substance is a mixture because it left a white powder in the beaker when boiled.

Explanation:

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What is the total number of moles (n) of electrons exchanged between the oxidizing agent and the reducing agent in the overall r
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Answer:
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Explanation:

The balance equation is as follow,

<span>                   5 Ag</span>⁺ + Mn⁺²<span> + 4 H</span>₂O    →<span>    5 Ag + MnO</span>₄⁻<span> + 8 H</span>⁺

Reduction of Ag:

                         Ag⁺ + 1 e⁻    →    Ag
Or,
                         5 Ag⁺  +  5 e⁻    →    5 Ag

Oxidation of Mn:

                          Mn⁺²   →    MnO₄⁻  +  5 e⁻

Result:
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why do you think the Framers give Congress a voice in most foreign policy decisions when they wrote the Constitution?
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