AnswersTX-Chemistry B-Credit Recovery Summer SchoolCumulative Exam

Cumulative Exam — Cumulative exam Answers

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Four different solutions (I, II, III, and IV) are labeled on the pH scale below.Why would solution IV be considered the most concentrated base out of the four substances?

Question illustration
A
It has the highest concentration of hydrogen ions.
B
It has the highest concentration of hydronium ions.
C
It has the highest concentration of oxide ions.
D
It has the highest concentration of hydroxide ions.
22
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Which best describes what forms in nuclear fission?

A
two smaller, more stable nuclei
B
two larger, less stable nuclei
C
one smaller, less stable nucleus
D
one larger, more stable nucleus
23

The table shows the characteristics of four substances after they are placed in water.Substance Ion concentrationElectrical conductivity WMediumGoodXLowPoorYHighExcellentZNoneNoneWhich compound is most likely the strongest electrolyte?

A
W
B
X
C
Y
D
Z
24

Why would a doctor most likely restrict a patient’s contact with other people while the patient receives internal radiation?

A
The patient’s stress and anxiety would be eliminated.
B
High levels of radiation can diffuse through the patient’s skin.
C
Social contact would increase the effect of the radiation treatment.
D
Radioactive material can leave the patient’s body through saliva, sweat, and urine.
25

Which salt is produced when NH4OH reacts with HNO3?

A
KNO2
B
NaNO3
C
NH4NO3
D
NH4NO2

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