January 2016 Chemistry Regents #16-20

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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 54-56
 Questions 57-61 Questions 62-65 Questions 66-68 Questions 69-72  Questions 73-75  Questions 76-78  Questions 79-82 Questions 83-85

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16  Which list includes three forms of energy?

(1) chemical, mechanical, electromagnetic

(2) chemical, mechanical, temperature

(3) thermal, pressure, electromagnetic

(4) thermal, pressure, temperature

1   temperature, pressure are not forms of energy
17 At STP a 1-liter sample of Ne(g) and a 1-liter sample of Kr(g) have the same

(1) mass

(2) density

(3) number of atoms

(4) number of electrons

3   Avogadro's hypothesis. Usually molecules but since they are Nobel gases, atoms can be used instead.
18 A reaction will most likely occur if the colliding particles have the proper

(1) mass, only

(2) mass and volume

(3) orientation, only

(4) orientation and energy

4   orientation and energy...you need both or no reaction

 

19  Which factors have the greatest effect on the rate of a chemical reaction between AgNO3(aq) and Cu(s)?

(1) solution concentration and temperature

(2) solution concentration and pressure

(3) molar mass and temperature

(4) molar mass and pressure

1   pressure requires a gas and there is none

molar mass has ho effect

20  Which expression represents the heat of reaction for a chemical change in terms of potential energy, PE?

(1) (PEproducts) + (PEreactants)

(2) (PEproducts) - (PEreactants)

(3) (PEproducts) (PEreactants)

(4) (PEproducts) -- (PEreactants)

4   (PEproducts) -- (PEreactants)

just know it

 

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 54-56
 Questions 57-61 Questions 62-65 Questions 66-68 Questions 69-72  Questions 73-75  Questions 76-78  Questions 79-82 Questions 83-85

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