Good morning, my beloved Cesium. :)
Class Schedule!
. . . I'm very sorry for a late post:
FIL:
- Submission of the draft for the Free Verse is tomorrow.
STR:
- Answer this question in a 1/2 cross-wise:
A random sample of five(5) car company managers have salaries (Php) of:
Manager 1: 52000
Manager 2: 41000
Manager 3: 63000
Manager 4: 35000
Manager 5: 48000
After dividing all salaries by 1000 and subtracting 55.
a) What is the variance?
b) What is the standard deviation?
CHEM:
- Answer 5.30, 5.32, 5.34, and 5.36:
5.30:
The decomposition of zinc carbonate, ZnCO3(s), into zinc oxide, ZnO(s), and CO2(g) at constant pressure requires the addition of 71.5 kJ of heat per mole of ZnCO3. a) Write a balanced thermochemical equation for the reaction. b) Draw an enthalpy diagram for the reaction.
5.32:
Without referring to the tables, indicate which of the following has the higher enthalpy in each case: a) 1 mol CO2(s) or 1 mol CO2(g) at the same temperature; b) 2 mol of hydrogen atoms or 1 mol of H2; c) 1 mol H2(g) and 0.5 mol O2(g) at 25°C; d) 1 mol N2(g) at 100°C or N2 at 300°C.
5.34:
Consider the following reaction:
CH3OH(g) --> CO(g) + 2H(g) ΔH= 90.7kJ
a) Is heat absorbed or evolved in the course of this reactions? b) Calculate the amount of heat transferred when 1.60 kg of CH3OH(g) are decomposed by this reaction at constant pressure. c)For a given sample of CH3OH, the enthalpy change on reaction is 64.7kJ. How many grams of hydrogen gas are produced? d) What is the value of ΔH for the reverse of the previous reaction? How many kJ of heat are released when 32.0g of CO(g) reacts completely with H2(g) to form CH3OH(g) at constant pressure?
5.36:
At one time, a common means of forming small quantities of oxygen gas in the laboratory was to heat KClO3:
2KClO3 --> 2KCl(s) + 3O2(g) ΔH= -89.4kJ
For this reaction, calculate ΔH for the formation of a) 4.34 mol of O2 b) 200.8 g of KCl. c) The decomposition of KClO3 from KCl and O2, is likely to be feasible under ordinary conditions? Explain your answer.
SS:
- The assignment thing is now due tomorrow. Check previous posts for the questions
BIO:
- Given by Sir Chuckie kanina (Yeah, I forgot about his TT . TT I'm sorry)
Read on the following:
01) sacromere
02) microfibril
03) myofilament
04) muscle fiber
05) A-band
06) I-band
07) H-zone
08) 2( or Z, it's not clear)-line
09) M-line
10) thick band
11) thin band
12) origin
13) intersection
HEALTH:
- Baby Book ewan pa thing. Can someone get/post the guidelines?
*Comment if I missed/wronged anything
General:
- The YMSAT proposals are all due on Monday, don't forget!- Remember to get your prom reply slips signed for submission on Monday.
Physics
Probset 2 Due on December 1, 2011.
Fil
Malayang taludturan poem first draft due Monday.
Chemistry
(on a 1/2 crosswise) Answer 5.18, 5.19, 5.20 page 189 in Brown, Le May, et al.
5.18 (a) Write an equation that expresses the first law of thermodynamics. (b) In applying the first law, do we need to measure the internal energy of a system? Explain. © Under what conditions will the quantities q and w be negative numbers?
5.19
Calculate delta E, and determine whether the process is endothermic or exothermic for the following cases: (a) A system releases 113 kJ of heart to the surroundings and does 39 kJ of work on the surroundings; (b) q = 1.62 kJ and w = -874 J. © the system absorbs 77.5 kJ of heat while doing 63.5 kJ of work on the surroundings
5.20
For the following processes, calculate the change in internal energy of the system, and determine whether the process is endothermic or exothermic: (a) A balloon is heated by adding 900 J of heat. It expands, doing 422 J of work on the atmosphere. (b) A 50-g sample of water is cooled from 30ºC to 15ºC, thereby losing approcimately 3140 J of heat. (c) a chemical reaction releases 8.65 kJ of heat and does no work on the surroundings
SocSci
(1 whole) Define the following terms: Renaissance, humanism, patron, vernacular, printing press
Differentiate the Italian Renaissance and the Northern Renaissance
Reminders for today:
PHY:
- Physics Long Test is Tomorrow. Coverage is Work, Enrgy, and Power(self-study on Power)
- For consultation purposes, answer the question below:
p. 146 of Giancolli, 3rd Edition, # 38)
(II) A ski starts from rest and slides down an 18° incline 80 m long.
(a) If the coefficient of friction is 0.080, what is the ski's speed at the base of the incline?
(b) If the snow is level at the foot of the incline and has the same coefficient of friction, how far will the ski travel along the level? Use energy methods.
BIO:
- Please read up on:
1) epidermis
2) dermis
3) hypodermis
4) stratum sorneum
5) s. germinavitum
6) s. lucidum
7) s. spinosum
8) s. basale
9) s. granolosum
10) dermal papilla
- BIO Quiz about the skeletal system tomorrow.
MATH:
-HW5:
Express in the form of a+bi, where a and b are real numbers:
48) 8(cos(7π/4) + i sin(7π/4))
50) 12(cos(4π/3) + i sin(4π/3))
52) 3(cos(3π/2) + i sin(3π/2))
54) √(53) cis(tan-1(- 2/7))
56) √(10) cis(tan-1 3)
Use trigonometric forms to find z1z2 and z1/z2:
58) z1= √(3) - i
z2=1+i
60) z1= -5 + 5i
z2=-3i
62) z1= 2i
z2=-3i
64) z1=-3
z2=5 + 2i
*Comment if I missed/wronged anything.
Reminders for today:
CHEM:
- LT na bukas. About Colligative Properties.
FIL:
- Malayang Taludturan is due on Tuesday (November 29). No Min./Max.
ENG:
- LT bukas rin. About the Introduction, the Tao Te Ching, and the Analects.
PHY:
- LT on November 25 (Friday). About Work, Energy, and Power. (Self-Study on Power)
- Problem Set: (Due: December 1)
Taken from Giancolli, 3rd Ed.:
p. 145-146:
25) (II) In 1955, a paratrooper fell 370 m after jumping from an aircraft without his parachute opening. He landed in a snowbank, creating a crater 1.1 m deep, but survived with only minor injuries. Assuming the paratrooper's mass was 80 kg and his terminal velocity was 50 m/s, estimate: (a) the work done by the snow in bringing him to rest; (b) the average force exerted on him by the snow to stop him; and (c) the work done on him by sir resistance as he fell.
28) (I) A spring has a spring constant, k, of 380 N/m. How much must this spring be compressed to store 60 J?
39) (II) A 60-kg crate, starting from rest, is pulled across a floor with a constant horizontal force of 100 N. For the first 10 m the floor is frictionless, and for the next 10 m the coefficient of friction is 0.20. What is the final speed of the crate.
41) (II) The roller coaster in Fig. 6-19 passes point A with a speed of 1.20 m/s. If the average force of friction is equal to one-fifth of its weight, with what speed will it reach point B? The distance traveled is 67.0 m.
47) (I) How long will it take a 1500-W motor to lift a 400-kg piano to a sixth-story window 15.0 m above?
Prob. Set 1 and LT1 Solutions:
*Comment if I missed/wronged anything.
English LT (tomorrow)
from the Tao Te Ching to Analects; Chinese philosophy
Chem LT ~tomorrow
from solutions to colligative properties
Physics LT
on Friday, everything we covered about work and power and... stuff.
Fil
Malayang taludturan poem due next week
Reminders for today:
FIL:
- Submissions for the FINAL tula with sukat at tugma is tomorrow.
- The rest of the reportings will be tomorrow.
STR:
- Try to finish your material sourcing.
SOC. SCI.:
- Our theme for FashTory is: Holocaust.
HEALTH:
- Baby Book: (Guidelines are with LJ)
CHEM:
- Finish the assignment (look at previous posts) in a 1/2-crosswise.
ENG:
- Read up on the remaining chapters of the Tao Te Ching.
*Comment if I missed/wronged anything
1. Math LT, Arc trig functions to sin and cos law
2. Chem HW:
13.48
13.48
13.50
13.51
*comment for fixes
Socsci: updated.
Math
- LT1 (Tuesday, I think? Basta hindi Monday): Inverse Trig Fxns to General Triangles
Chem
- LT1 on not Monday: From solutions to concentrations
STR
- Read on Variability
Fil
- Due Monday: Write another poem, same specs as before (4 stanzas, 4 lines per stanza, a-a-a-a rhyming scheme), except this time on a different topic.
SocSci
-Check the Church Slides at: http://www.slideshare.net/PatGan/church-a-powerful-institution
-Check the Church Slides at: http://www.slideshare.net/PatGan/church-a-powerful-institution
- Answer your history journal: "As social scientists, how can we put into rest this so-called religious discrimination?"
- The FashTory themes will be presented next meeting instead, as Sir Erin isn't done with all the time lines.
- We will also have a pair open-notes quiz. Sir gave us some questions to answer that will help:
(Sorry, I only have 4-5. Can anyone edit this part to add the first 3?)
4.) How did the Hundred Years' War weaken feudal power?
5.) Describe the emerging central governments in England and France during the medieval time.
6.) How did farming increase in population during the Medieval Ages?
Yes, I know it's late, but here are the reminders for tomorrow:
SS:
- We will be receiving our themes for FashTory tomorrow. Have you finished choosing your committees?
CHEM:
- Prac. Test bukas. Bring Labgown, Sci. Cal., among others.
PHY:
- Long Test tomorrow!!!
ENG:
- Reportings ulit tomorrow.
BIO:
- Finish the Skeleton thing.
HR:
- Dormer Boys, Human Bingo. Maghanda na kayo.
* Comment if I missed/wronged anything
Fil
- The edited version of your poem is due on Wednesday (Nov 16)
Math
- Seatwork tomorrow
- Quiz on Wednesday
- LT next Monday
STR
- The long quiz on statistics is tomorrow and on Thursday (Nov 17)
Physics
- LT on Thursday
- Probset due Friday
Here are your reminders:
CHEM:
- Practical Test again on Monday:
- Problem Set: (to be done on a 1 whole sheet of intermediate pad)
13.30-a:
What is the molality of a solution formed by dissolving 1.50 mol of KCl in 16.0 mol of water?
13.32:
Ascorbic acid, (vitamin C, C6H8O6) is a water-soluble vitamin. A solution containing 80.5 g of ascorbic acid issolved in 210 g of water has a density of 1.22 g/mL at 55°C. Calculate: a) mass percentage; b) mole fraction; c) molality; d) molarity of ascorbic acid in this solution.
13.34:
The density of toluene (C7H8) is 0.867 g/mL, and the density of thiophene (C4H4S) is 1.065 g/mL. A solution is made by dissolving 10.0 g of thiophene in 250.0 mL of toluene. a) Calculate the mole fraction of thiophene in the solution. b) Calculate the molality of thiphene in the solution. c) Assuming that the volumes of the solute and solvent are additive, what is the molarity of thiophene in the solution?
13.36:
Calculate the number of moles of solute present in each of the following solutions: a) 245 mL of 1.59 M HNO3(aq); b) 50.0 mg of an aqueous solution that is 1.25 m NaCl; c) 75.0 g of an aqueous solution that is 1.50% sucrose (C12 H22O11) by mass.
PHY:
- Don't forget to answer the problem set. It can be found on the previous posts.
ENG:
- Group reporting again on Wednesday
MATH:
*Comment if I missed/wronged anything.
Aargh, who's idea is it not to post today?
Anyways, reminders for today:
CHEM:
- The long Lab Rep (I belive it's Experiment No. 27) is due tomorrow.
FIL:
- The Written Reports are due tomorrow!
- Karl, you're most likely going to report tomorrow. Along with whoever gets called too.
SS:
- FashTory. We need to start working at that ASAP. You know what's at stake.
BIO:
- Proceed on finishing the comic strips.
MATH:
- Don't forget to make the "rig". You will basically need:
1) ruler/ meter stick/ straight edge
2) protractor with a hole at the center (you know which center I'm talking about)
3) tape/ glue
4) some string
5) a weight
6) straw
As to build it, Sir Leo already has explained it, and most likely you will be cramming on making it over break, so someone should already know on how to build it by then.
PE:
- Gawd. First PE in how long?
* Comment if I missed/wronged anything.
For those without Giancoli 3rd ed! (credits to Issa of 3-Na for the scans)
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