June 2011 Chemistry Regents #74-76

Highlight to reveal answers and explanations

Back to Regents Exams

 

Questions 1-10 Questions 11-20 Questions 21-30 Questions 31-40 Questions 41-50 Question 51 Questions 52-54 Questions 55-59 Questions 60-61 Questions 62-63 Questions 64-65 Questions 66-68 Questions 69-70 Questions 71-73 Questions 74-76 Questions 77-79 Questions 80-82 Questions 83-85

Questions

Base your answers to questions 74 through 76  on the information below. A student prepared two mixtures, each in a labeled beaker. Enough water at 20.°C was used to make 100 milliliters of each mixture. 74. Classify each mixture using the term “homogeneous” or the term “heterogeneous.” [1] HIGHLIGHT TO SEE THE ANSWER mixture 1=homogeneous mixture 2=heterogeneous 75. Determine the volume of the Fe filings used to produce mixture 2. [1] HIGHLIGHT TO SEE THE ANSWER Answer=2.02cm3 v=d x m= 7.87g/cm3(15.9g) 76. Describe a procedure to physically remove the water from mixture 1. [1] HIGHLIGHT TO SEE THE ANSWER heat the mixture until all the water evaporates allow the water to evaporate distill the mixture reverse osmosis on to Questions 77-79

Questions 1-10 Questions 11-20 Questions 21-30 Questions 31-40 Questions 41-50 Question 51 Questions 52-54 Questions 55-59 Questions 60-61 Questions 62-63 Questions 64-65 Questions 66-68 Questions 69-70 Questions 71-73 Questions 74-76 Questions 77-79 Questions 80-82 Questions 83-85

Back to Regents Exams