New York State Earth Science RegentsNew York State Living Environment Regents

 
New York State Chemistry Regents January 2008
Chemistry Regents January 2008 - Question 82 PDF Print E-mail
Written by The Chemistry Wizard   

chemjan08q (82)125C.

Adding a carbon, increases the boiling point incrementally.  In this case, you simply need to

find the midpoint between the boiling points of heptane and nonane.

Last Updated on Wednesday, 28 October 2009 00:27
 
Chemistry Regents January 2008 - Question 83 PDF Print E-mail
Written by The Chemistry Wizard   

chemjan08q (83)

The intermolecular forces increase as molar mass increases; boiling point increases as a result of these forces.

Last Updated on Saturday, 07 March 2009 02:24
 
Chemistry Regents January 2008 - Question 19 PDF Print E-mail
Written by The Chemistry Wizard   

chemjan08q (19)

(2) is the correct answer.

An alkene is a compound in organic chemistry that contains at least one double carbon bond.  If you look at table Q, the general formula of an alkene is

CnH2n.  Choice 2 is the only option which follows this formula.

 
Chemistry Regents January 2008 - Question 42 PDF Print E-mail
Written by The Chemistry Wizard   

chemjan08q (42)

(2) CH3CH3

A saturated hydrocarbon contains single carbon-carbon bonds (alkane).  You can use the formula from Table Q, CnH2n+2, and see that answer 2 matches this formula.

Last Updated on Wednesday, 04 March 2009 10:24
 
Chemistry Regents January 2008 - Question 66 PDF Print E-mail
Written by The Chemistry Wizard   

chemjan08q (66)

It is an alcohol.  (check the ending)

Last Updated on Friday, 13 March 2009 11:07
 
Chemistry Regents January 2008 - Question 67 PDF Print E-mail
Written by The Chemistry Wizard   

chemjan08q (67)

1,2-ethanediol is soluble in water because both molecules are polar.

Last Updated on Friday, 13 March 2009 11:07
 
Chemistry Regents January 2008 - Question 68 PDF Print E-mail
Written by The Chemistry Wizard   
chemjan08q (68)6690g of ethanediol/62 (g/mol) = 108 mol
 


Copyright Information

All works and materials contained within this site Copyright © 2009 Technology Strategies For Success

Disclaimer

We are not affiliated with, nor endorsed by, the New York State Education Department.

The information contained in this website is for general information purposes only. The information is provided by "Technology Strategies for Success" and while we strive to keep the information up-to-date and correct, we make no representations or warranties of any kind, express or implied, about the completeness, accuracy, reliability, suitability or availability with respect to the website or the information, products, services, or related graphics contained on the website for any purpose. Any reliance you place on such information is therefore strictly at your own risk.