How many servings of CoolWhip in an 8 oz container? A. less than - - PDF document

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How many servings of CoolWhip in an 8 oz container?

• A. less than 10
• B. between 10 and 20
• C. between 20 and 30
• D. between 30 and 40
• E. greater then 40

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1 gal $3.00 2 261 mi = $78.3 20 mi 1 gal $80 (1 sf)    

Recall...

Note added after class: I changed the numbers to match what we used in class. Lower MPG and higher price of gas increased the

• verall cost

compared to the calculation on Friday before Labor Day.

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C8H18 + 25/2O2  8CO2 + 9H2O

2

1 gal 2 261 mi 20 mi 1 gal 2 261 mi amount of CO 20 m $3.00 = $80 1 gal i

... ? ...

     



chemical energy (fuel) you add  energy you release (light, heat, motion)

fuel + O2  CO2 + H2O food + O2  CO2 + H2O

chemical energy (food) you add  energy you release (heat, to maintain body temperature; motion, to do work)

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http://www.uic.edu/classes/phar/phar332/Clinical_Cases/carbo%20metab%20cases/ glycogen%20metab/Glycogen%20biochemistry.htm

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Assumptions: No exercise beyond the normal activity to burn 2000 Calories per day.

We use stored energy from food at a rate ranging from about 1 Cal/min (basal metabolic rate) to about 15 Cal/min.

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Assumptions: No exercise beyond the normal activity to burn 2000 Calories per day. No food.  Get energy from glycogen until gone, then burn fat after that.

http://www.uic.edu/classes/phar/phar332/Clinical_Cases/carbo%20metab%20cases/ glycogen%20metab/Glycogen%20biochemistry.htm

11/13/2017 8 Assuming an energy need of 2000 Cal/day and no food (!) during this time: 2000 Cal/day  (1 g/9 Cal)  (1 lb/453.6 g) 0.4899 lb/day So, max weight loss in 20 days is 1 lb (1st day, glycogen) + 19 day(0.5 lb/day) = 10.5 lb !

Which balloon... H2 O2 2:1 H2+O2

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H2 O2 2:1 H2+O2 Which balloon released the most energy? A. the H2 balloon B. the O2 balloon C. the H2+O2 balloon

The H2+O2 balloon released less energy much faster.

What are the signs for heat (q) and work (w):

• A. +q +w
• B. +q w
• C. q +w
• D. q w

system system

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What are the signs for heat (q) and work (w):

• A. +q +w
• B. +q w
• C. q +w
• D. q w

system system

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http://www.ncert.nic.in/html/learning_basket/energy10class/combustion%20engine1.htm http://www.ncert.nic.in/html/learning_basket/energy10class/combustion%20engine1.htm

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What are we doing in lab next week?

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What is Hº for the reaction H2O2(l)  H2(g) + O2(g) A. −187.6 kJ/mol B. 187.6 kJ/mol C. −187.6 + (−285.8) = −473.4 kJ/mol D. 285.8 − (−187.6) = 473.4 kJ/mol E. −285.8− (−187.6) = −98.2 kJ/mol

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What is Hº for the reaction H2O2(l)  1/2O2(g) + H2O(l) A. −187.6 kJ/mol B. 187.6 kJ/mol C. −187.6 + (−285.8) = −473.4 kJ/mol D. 285.8 − (−187.6) = 473.4 kJ/mol E. −285.8− (−187.6) = −98.2 kJ/mol

So, which reaction is occurring? A. H2O2(l)  H2(g) + O2(g) B. H2O2(l)  1/2O2(g) + H2O(l)

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http://www.uic.edu/classes/phar/phar332/Clinical_Cases/carbo%20metab%20cases/ glycogen%20metab/Glycogen%20biochemistry.htm

NH4NO3(s)  NH4

+(aq) + NO3 (aq)

This process is

• A. endothermic, H > 0
• r
• B. exothermic, H < 0

11/13/2017 17 Oil of wintergreen contains methyl salicylate which has anti-inflammatory properties and is closely related to the well-known medication aspirin

Wintergreen

H O O O

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aspirin

(acetylsalicylic acid)

Bob Holton

Department of Chemistry and Biochemistry Florida State University

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Holton started with 10- Deacetylbaccatin III (or 10- DAB), a natural compound found in abundance in the needles of the English yew, a common European

• shrub. Attaching a 34 atom

ester side-chain at a particular site, plus a few

• ther steps, produced

significant amounts of Taxol.

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Orbitals (shapes and energies) Quantum numbers (n, l, ml)

 

Quantum (wave) mechanics



Dual particle- wave nature

• f matter



Electro- magnetic radiation Waves



Retrosynthesis

• f Atomic

Orbitals

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Which one of these equations is correct? A. wavelength = frequency x speed B. speed = wavelength x frequency C. frequency = speed x wavelength

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Why are fire trucks red? Why are fire trucks red?

• A. Red paint is the cheapest.
• B. People like red the most.
• C. Red paint is easiest to see.

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In the early 1970s, Ward LaFrance created what was probably the most controversial issue ever to hit the apparatus field. By aggressively marketing a new color for fire apparatus, lime green, as being more visible and therefore safer, a wedge was driven into the fire service. Traditionalists stood behind the old standard red, while "progressive" fire service personnel preached the advantages of the new color. At one point, there were actually more apparatus being delivered in the new color than the traditional red. Many fire departments, both large and small, switched to the new color.

http://www.firehouse.com/magazine/american/apparatus.html

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Contemporary Color Theory and Use: Theory and Use Steven Bleicher, Cengage Learning, 2004; page 42

For years, fire trucks have been painted red, hence the name “fire-truck red.” But several years ago it was discovered that this red hue is hard to see at dawn and dusk when there is little

• light. Today, yellow-green is used for fire trucks

and hydrants because it can be seen from farthest awar, regardless of the light and time

• f day. Years from now when school children ask

what color fire trucks are, they will answer “yellow-green.”

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http://acept.asu.edu/PiN/rdg/rainbow/secondary.shtml FSU vs. NCSU game October 6, 2007

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Why are fire trucks red?

• A. Red paint is the cheapest.
• B. People like red the most.
• C. Red paint is easiest to see.

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http://www.smc.edu/AcademicPrograms/PhysicalSciences/Documents/ Chemistry_11_Experiments/Mn_Lab.pdf

ROY G. BIV

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11/13/2017 29 “the size of the wave matches the size of the antenna”

processes involving the nucleus processes involving core electrons excite/remove valence and bonding electrons vibrate bonds between atoms rotate molecules

near-IR

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http://webvision.med.utah.edu/imageswv/spectra.jpeg http://www.amastro2.org/at/ot/othcs.gif

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Many fire departments, both large and small, switched to the new color. But after about a decade, departments began to switch back to red. Many apparatus were repainted. Virtually every large department that had gone to the new color returned to red. Currently, few new apparatus are being delivered that are painted lime green.

http://www.firehouse.com/magazine/american/apparatus.html

 = wavelength  = frequency c = speed of light

c =   

  1/

=========================================

blackbody radiation, photoelectric effect

E = Ephoton = h

1

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Determine the wavelength of energy required to break

• ne C—Cl bond.

~360 kJ/mol x (1 mol/6 x 1023 C—Cl bonds) x (1000 J/kJ) = 6 x 10-19 J

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Energy n = 1 n = 2 n = 3 n = ∞ E1 = 2.18 x 10-18 J E2 = -5.45 x 10-19 J E3 = 2.42 x 10-19 J E∞ = 0 J … …

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Energy n = 1 n = 2 n = 3 n = ∞ E1 = 2.18 x 10-18 J E2 = -5.45 x 10-19 J E3 = 2.42 x 10-19 J E∞ = 0 J … …

En = h2/(82meao

2n2) = 2.18 x 10-18 J/n2

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electrons diffracted off aluminum foil X-rays diffracted off aluminum foil

De Broglie wavelength  = h/(mv)

everything has a wavelength, but it only becomes important at very low masses (electrons, atoms) or very low speeds

Heisenberg uncertainty principle x  p ≥ h/(4)

• 1. we cannot know anything with perfect accuracy; i.e. no determinism
• 2. the very act of measuring something changes the thing we were

measuring; i.e. there are no innocent measurements – we are tied to what we observe

• 3. at the atomic level, the universe is Bizarro World

http://www.youtube.com/watch?v=DfPeprQ7oGc