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PORTAGE LEARNING CHEM 210 - MODULE 2 EXAM.

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PORTAGE LEARNING CHEM 210 - MODULE 2 EXAM.Scientific Calculator The pH of a solution of 8.9 x 10-12 M NaOH is: A. 8.9 B. 8.9 x 10-12 C. 4.8 D. 11 E. 2.9 A B C D E [Kw=[H+][OH-] = 1.0 x 10-14; [H+][8.9 x 10-12] = 1.0 x 10-14 ;[H+]=890; pH=-log[890]=2.9] Water is a unique molecule. Which of the following contributes to water’s unique place in the chemical world? The geometry of the molecule The polarity of the O-H bonds The ability of water molecules to hydrogen bond The bond angle of water All of the answers are correct ALL OF THE ANSWERS ARE CORRECT What factor contributes to the bent shape of a water molecule? The dipole arrows in a water molecule The unshared electron pairs on the oxygen atom The electronegativity difference between hydrogen and oxygen The unequal electron sharing between hydrogen and oxygen None of the answers are correct THE UNSHARED ELECTRON PAIRS ON THE OXYGEN ATOM Which diagrams correctly represent a hydrogen bond?

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Uploaded on
February 14, 2022
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Written in
2021/2022
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  • portage learning chem 210 module 2 exam   scientific calculator the ph of a solution of 89 x 10 12 m naoh is a 89 b 89 x 10 12 c 48 d 11 e 29 a b c d e kwhoh 10

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PORTAGE LEARNING CHEM 210 - MODULE 2
EXAM.

,Question 1
pts


Scientific Calculator




The pH of a solution of 8.9 x 10-12 M NaOH is:


A. 8.9


B. 8.9 x 10-12


C. 4.8


D. 11


E. 2.9


A
B
C
D



E

[Kw=[H+][OH-] = 1.0 x 10-14; [H+][8.9 x 10-12] = 1.0 x 10-14 ;[H+]=890;


pH=-log[890]=2.9]

Question 2
pts

Water is a unique molecule. Which of the following contributes to water’s unique place

, in the chemical world?

The geometry of the molecule
The polarity of the O-H bonds
The ability of water molecules to hydrogen bond
The bond angle of water
All of the answers are correct

ALL OF THE ANSWERS ARE CORRECT


What factor contributes to the bent shape of a water molecule?


The dipole arrows in a water molecule
The unshared electron pairs on the oxygen atom
The electronegativity difference between hydrogen and oxygen
The unequal electron sharing between hydrogen and oxygen
None of the answers are correct

THE UNSHARED ELECTRON PAIRS ON THE OXYGEN ATOM

Question 4
pts


Which diagrams correctly represent a hydrogen bond?
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