January 2017 Chemistry Regents #46-50

Highlight to reveal answers and explanations

Questions 1-5 Questions 6-10 Questions 11-15 Questions 16-20 Questions 21-25 Questions 26-30 Questions 31-35 Questions 36-40 Questions 41-45 Questions 46-50

Question 51-53 Questions 54-55
 Questions 56-57 Questions 58-59 Questions 60-61 Questions 62-65  Questions 66-68  Questions 69-72  Questions 73-77 Questions 78-79 Questions 80-82 Questions 83-85
 

 Other Regents Exams

 

Questions

Answer Links

Explanations

46 Given the equation representing a reaction:

Which term best describes this reaction?

(1) ionization (3) oxidation

(2) neutralization (4) reduction

4   charge decreases...reduction
3   Table J

oxidation above reduction

 

48 Given the formulas representing two compounds at standard pressure:

The compounds can be differentiated by their

(1) boiling points

(2) gram-formula masses

(3) numbers of hydrogen atoms

(4) percent compositions by mass of carbon

1   different structures have different boiling points

 

49 The table below shows the atomic mass and natural abundance of the two naturally occurring isotopes of lithium.

Which numerical setup can be used to determine the atomic mass of naturally occurring lithium?

(1) (7.6)(6.015 u) (92.4)(7.016 u)

(2) (0.076)(6.015 u) (0.924)(7.016 u)

2   average atomic mass calculation
50 Given the equation representing a reaction at equilibrium:

According to one acid-base theory, the forward reaction is classified as an acid-base reaction because

(1) H2S is a H+ donor and CH3NH2 is a H+ acceptor

(2) CH3NH2 is a H+ donor and H2S is a H+ acceptor

(3) HS- and CH3NH3+  are both H+ donors

(4) CH3NH3 and HS- are both H+ acceptors 

1   Acids are proton donors

Bases are acceptors

 

On to Question 51-53

Questions 1-5 Questions 6-10 Questions 11-15 Questions 16-20 Questions 21-25 Questions 26-30 Questions 31-35 Questions 36-40 Questions 41-45 Questions 46-50

Question 51-53 Questions 54-55
 Questions 56-57 Questions 58-59 Questions 60-61 Questions 62-65  Questions 66-68  Questions 69-72  Questions 73-77 Questions 78-79 Questions 80-82 Questions 83-85
 
Back to Regents Exams

web stats analysis