June 2024  Chemistry Regents #26-30

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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

Questions 51-52 Questions 53-55 Questions 56-58 Questions 59-60 Questions 61-62 Questions 63-65 Questions 66-69 Questions 70-73 Questions 74-77 Questions 78-81 Questions 82-85 

 

 

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26. Systems in nature tend to undergo changes that result in:
1 An increase in both energy and entropy.
2 A decrease in both energy and entropy.
3 An increase in energy and a decrease in entropy.
4 A decrease in energy and an increase in entropy.		 1   Nature favors exothermic (lower energy) and an increase in entropy (more randomness)
27. What is the general formula for the homologous series that includes ethyne?
1 CₙHₙ
2 CₙH₂ₙ
3 CₙH₂ₙ₋₂
4 CₙH₂ₙ₊₂		 3   Look on Table Q  

ethyne is the example and the general formula is next to it
28. Given the equation representing a reaction:

2KI + F₂ → 2KF + I₂

When 2.0 moles of electrons are gained by fluorine, how many moles of electrons are lost by iodine?
1 1.0 mol
2 2.0 mol
3 3.0 mol
4 4.0 mol

 2   electrons lost must equal electron gained

 

29. Which compound is an Arrhenius base?
1 H₂SO₄
2 NaCl
3 Ca(OH)₂
4 KNO₃		 3   bases are listed on Table L

choice 3 is on this table
30. Which statement describes a benefit of fission?
1 Fission produces nuclear power.
2 Fission increases the possibility of nuclear accidents.
3 Fission increases the possibility of biological exposure.
4 Fission produces waste products that need long-term storage.		 1   Hmm... the other choices are not good.

 

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

Questions 51-52 Questions 53-55 Questions 56-58 Questions 59-60 Questions 61-62 Questions 63-65 Questions 66-69 Questions 70-73 Questions 74-77 Questions 78-81 Questions 82-85 

 

 

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