August 2010 Chemistry Regents #51-53

Highlight to reveal answers and explanations

 

Questions 1-10 Questions 11-20 Questions 21-30 Questions 31-40 Questions 41-50

Questions 51-53 Questions 54-56 Questions 57-58 Questions 59-60 Questions 61-63 Questions 64-66 Questions 67-69 Questions 70-72 Questions 73-74 Questions 75-78 Questions 79-81

 

Other Regents Exams

Questions

51 In your answer booklet, write an electron configuration for a silicon atom in an excited state. [1]

Highlight box for Answer  

2-7-5

1-8-5

2-8-3-1

and others

Base your answers to questions 52 and 53 on the information below.

52 Identify one element from this table for each type of element: metal, metalloid, and nonmetal. [1]

Highlight box for Answer  

Metal -->   Sn  or Pb metalloid --> Si or Ge nonmetal--> C

53 Calculate the volume of a tin block that has a mass of 95.04 grams at STP. Your response must include both a numerical setup and the calculated result. [2]

Highlight box for Answers  

7.31 g/cm3 =95.04 g / V    or  95.04/7.31    (1 point)

Volume=  13.0 cm3      (1 point)

Sig. Figs are not penalized here

on to the next questions

Questions 1-10 Questions 11-20 Questions 21-30 Questions 31-40 Questions 41-50

Questions 51-53 Questions 54-56 Questions 57-58 Questions 59-60 Questions 61-63 Questions 64-66 Questions 67-69 Questions 70-72 Questions 73-74 Questions 75-78 Questions 79-81

 
Back to Regents Exams