AnswersLA-Chemistry AMolar Masses

Molar Masses Answers

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1
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Potassium permanganate (KMnO4) reacts with hydrochloric acid (HCl) to form potassium chloride (KCl), manganese chloride (MnCl2), water (H2O), and chlorine gas (Cl2). The balanced chemical equation is 2KMnO4 + 16HCl → 2KCl + 2MnCl2 + 8H2O + 5Cl2. Select the correct ratios of each of the following substances.KMnO4:KCl =

A
2:2
B
1:2
C
2:1
2
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HCl:H2O =

A
1:1
B
16:8
C
8:16
3

KMnO4:Cl2 =

A
2:1
B
5:2
C
2:5
4

HCl:MnCl2 =

A
1:2
B
16:2
5

A quantity of NH3 decomposes to produce 0.0351 mol N2. How many moles of H2 are produced?

A
0.0351 mol H2
B
0.0117 mol H2
C
0.105 mol H2
D
0.0702 mol H2
6

Question text not available

A
0.835 mol O2
B
1.67 mol O2
C
3.34 mol O2
D
6.68 mol O2
7

For the reaction2Fe + 3Cl2 → 2FeCl3which of the following options gives the correct reactant:reactant ratio?

A
Fe:Cl2 = 1:1
B
Fe:Cl2 = 2:3
C
Fe:Cl2 = 3:2
D
Fe:FeCl3 = 1:1
8

Question text not available

A
Yes, and I got the correct answer.
B
Yes, but I got the wrong answer because I made a mathematical error.
C
No, I did not set up the equation correctly.
9

Question text not available

A
Yes, and I got the correct answer.
B
Yes, but I got the wrong answer because I made a mathematical error.
C
No, I did not set up the equation correctly.

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Molar Masses Answers — LA-Chemistry A