June 2016 Chemistry Regents #70-71

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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 Questions 52-53 Questions 54-55 Questions 56-58 Questions 59-60 Questions 61-62 Questions 63-65 Questions 66-69  Questions 70-71  Questions 72-74  Questions 75-77  Questions 78-81  Questions 82-85

 

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Question 70-71

 

 

Base your answers to questions 70 through 71 on the information below and on your knowledge of chemistry.

 During photosynthesis, plants use carbon dioxide, water, and light energy to produce glucose, C6H1206, and oxygen. The reaction for photosynthesis is represented by the balanced equation below.

6CO2 + 6H2O + light energy —> C6H12O6 + 6O2

70 Write the empirical formula for glucose.

Answer-->   CH2O

71 State evidence that indicates photosynthesis is an endothermic reaction. [1]

Answer-->  light energy is a reactant  (on the left of the reaction)

on to Questions 72-74

 

 

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 Questions 52-53 Questions 54-55 Questions 56-58 Questions 59-60 Questions 61-62 Questions 63-65 Questions 66-69  Questions 70-71  Questions 72-74  Questions 75-77  Questions 78-81  Questions 82-85

 

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