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Chemistry Hesi A2
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HESI A2
Chemistry
Chemistry Hesi A2
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Question 1 of 25
Aluminum (Al) has 13 protons in its nucleus. What is the number of electrons in an Al3+ ion?
A. 16
B. 13
C. 10
D. 3
Correct Answer:
Rationale:
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Question 2 of 25
What does a blood sample with a pH of 3 indicate?
A. It is strongly acidic.
B. It is strongly basic.
C. It is weakly acidic.
D. It is weakly basic.
Correct Answer:
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Question 3 of 25
A radioactive isotope has a half-life of 20 years. How many grams of a 6-gram sample will remain after 40 years?
A. 8
B. 6
C. 3
D. 1.5
Correct Answer:
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Question 4 of 25
Which compound has a nonpolar bond in which the electrons are shared equally?
A. Hâ‚‚O
B. NH₃
C. Clâ‚‚
D. CHâ‚„
Correct Answer:
Rationale:
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Question 5 of 25
Identify the type of reaction shown: 8Fe + S → 8FeS
A. Single displacement
B. Double displacement
C. Synthesis
D. Acid-base
Correct Answer:
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Related Questions
What is the charge of a gamma ray?
Balance this equation: Zn + HCl → ZnCl + H2.
Which is a triatomic allotrope of oxygen?
What does a blood sample with a pH of 3 indicate?
Which compound has a nonpolar bond in which the electrons are shared equally?
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