Cesium 2013

. . . 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