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Honors Chemistry — Crosby
Academic Year 2016-17

 
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Welcome to the website for Honors Chemistry classes.

Schoology NPS Google Docs

New News!
Last update: Wednesday, June 21, 2017 5:11 PM

Welcome Back!

9 Jun 17 Final Exam Date:
Thursday, 22 Jun 17

8:15 – 10:00 AM
E: Room 3201 (Vandergrift)
G: Room 3203 (Schmidt)
6 Feb 16

The Ruthenium-105 answers are available here for you to check your results and significant figures. Remember, some deviation in the last digit is expected, depending on how intermediate values are carried forward. The answers shown here were calculated using a spreadsheet, so the only rounding used was for the answers presented.

b.
 
2.25(2) half-lives
c.
 
0.734(6) mol
d.
  Ru: −8.05435 × 108 kJ/mol/nucleon
Rh: −8.06008 × 108 kJ/mol/nucleon
f.
 
3.75 × 108 kJ released
g.
 
3470 houses (3 sig. figs.)
h.
 
3.76 (no units)
i.
 
2410 g (3 sig. figs.)


 

3 Jan 17 

Use these values for the reference constants listed below1 so that you will be able to generate the same results as your peers. Pay attention to significant figures when working through Ruthenium-105.

Avogadro's Number
 
6.02214085774 × 1023 mol−1
speed of light
 
2.99792458 × 108 m/s
proton
 
1.0072764321 g/mol
neutron
 
1.0086649158 g/mol
electron
 
0.00054857990932 g/mol

1Source: National Institute of Science and Technology (NIST)
    * Atomic and Nuclear Constants
    * Physico-Chemical Constants
 
20 Sep 16

WebScores is up and running! Use the first letter of your first name and up to 7 letters of your last name (all lower case) as your login username. For example, my username is acrosby. Your default password is your student ID number. (WebScores is only for Crosby students.)

You can use this form to enter a password of your choice for accessing WebScores: Password Update Form. Once you enter your password of choice, test it on WebScores!
 

3 Sep 16  Honors Chemistry Sections:
  • Crosby section meets in room 3107
  • McChesney sections meet in room 3102
All sections have their first meeting (10 minutes) on Tuesday, 6 Sep 16.
 
Chemistry is FUN!

 

 

 
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Copyright© 2005 – 2014, and 2015 by Alan Crosby (adcrosby@nshs-science.org)
Newton South High School, Newton Centre, MA 02459
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