Author Topic: What Did You Do Today? (Read 750463 times)

LanggamTamsi2 · « **Reply #560 on:** October 18, 2008, 04:06:32 PM »

Nahinoktok i miss aya.

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Ginger · « **Reply #561 on:** October 18, 2008, 08:00:17 PM »

sleep, read, watch tv, dokdok

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Lorenzo · « **Reply #562 on:** October 18, 2008, 10:17:05 PM »

sleep, read, watch tv, dokdok

What are you watching, 'te?

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Ginger · « **Reply #563 on:** October 19, 2008, 03:46:52 AM »

dong, i watched a norsk documentary film. there were three norwegian families who lived with the natives in ecuador, namibia and cambodia.

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Lorenzo · « **Reply #564 on:** October 20, 2008, 07:44:10 AM »

Interesting documentary film. I always like culture-clash documentaries.

As for me, had dinner at at friend's house. She cooked me Butter Chicken.

Pakistani-style. Yum Yum Yum.

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kiamoy · « **Reply #565 on:** October 20, 2008, 09:46:02 AM »

kahuman palang ko gym

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buwadsanga · « **Reply #566 on:** October 20, 2008, 10:24:53 AM »

ako nag rak en roll!

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ms da binsi · « **Reply #567 on:** October 21, 2008, 01:55:40 AM »

I participated on a 5 K marathon last saturday @ 50 degrees! i have pics tua sa laing camera! but i made it! it was fun!

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bol-anon nga cebuano · « **Reply #568 on:** October 21, 2008, 02:29:56 AM »

kahuman palang ko gym

nag work out diay ka kiams? nag pa tone ka sa imong body?

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Ginger · « **Reply #569 on:** October 21, 2008, 03:47:15 AM »

nang harvest ug apple. naka harvest mi ug 3 ka crate from 2 apple trees. ugma mag panit ug mag slice kay i-freeze para ready na inig mag luto ug apple cake and pies.

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ms da binsi · « **Reply #570 on:** October 21, 2008, 03:48:25 AM »

hhmmm my favorite apple pie!

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Ginger · « **Reply #571 on:** October 21, 2008, 03:49:27 AM »

sus ga bagyo dire pero perte murag signal number 2

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grazie7y · « **Reply #572 on:** October 21, 2008, 12:03:05 PM »

Nag laba ug plantsa.

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kiamoy · « **Reply #573 on:** October 21, 2008, 01:02:55 PM »

uu toning.. ug pagamay tiyan..

i just finished luto adobo manok ug tawgi..hehe

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bol-anon nga cebuano · « **Reply #574 on:** October 22, 2008, 12:14:36 AM »

uu toning.. ug pagamay tiyan..

i just finished luto adobo manok ug tawgi..hehe

kalami ana gud. panghatag nya ha.

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smiffytheninja · « **Reply #575 on:** October 23, 2008, 01:49:19 PM »

Trying to study for Chemistry...

I still don't get a couple things.

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lumine · « **Reply #576 on:** October 23, 2008, 09:08:27 PM »

nakipagchat sa ako mga students sa ormoc and cebu.

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LanggamTamsi2 · « **Reply #577 on:** October 24, 2008, 03:59:06 AM »

early in the morning diri pa, i suppose work today na pod, basta pobri kayud man jud.

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Lorenzo · « **Reply #578 on:** October 24, 2008, 08:20:09 AM »

Trying to study for Chemistry...

I still don't get a couple things.

'Day, what are the things that you are having trouble with?

We can do a review here if you want.

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smiffytheninja · « **Reply #579 on:** October 25, 2008, 09:37:45 AM »

'Day, what are the things that you are having trouble with?

We can do a review here if you want.

Kuya,

Percent purity is bugging me...

Problems like:

A 0.7500 gram sample containing Aluminum metal and sand was analyzed. If 0.548 Liters of H_2(g) was collected at 20.0Â°C, what was the mass % of Al_(s) in the sample? The vapor pressure of water is 17.54 torr at 20.0Â°C and the atmospheric pressure was 755.3 torr during the experiment.

I identified units of Mass, Volume, Pressure, and Temperature, which corresponds to the ideal gas law, PV=nRT; R being equivalent to the constant, (0.082057Lâ€¢atm/Kâ€¢mol)

After converting to the standard units, I am given:

*0.2800 moles of Aluminum metal
0.548 Liters of H_2(g) collected at 293.15K
The vapor pressure of water: 0.2300 atm at 293.15K
and finally, the atmospheric pressure: 0.9940 atm

*I am a little stuck here, because one, it seems like my conversion from grams to moles seems invalid because it is a mixture containing both Aluminum metal and Sand as opposed to just Aluminum alone.

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Lorenzo · « **Reply #580 on:** October 25, 2008, 10:11:41 AM »

Kuya,

Percent purity is bugging me...

Problems like:

A 0.7500 gram sample containing Aluminum metal and sand was analyzed. If 0.548 Liters of H_2(g) was collected at 20.0Â°C, what was the mass % of Al_(s) in the sample? The vapor pressure of water is 17.54 torr at 20.0Â°C and the atmospheric pressure was 755.3 torr during the experiment.

I identified units of Mass, Volume, Pressure, and Temperature, which corresponds to the ideal gas law, PV=nRT; R being equivalent to the constant, (0.082057Lâ€¢atm/Kâ€¢mol)

After converting to the standard units, I am given:

*0.2800 moles of Aluminum metal
0.548 Liters of H_2(g) collected at 293.15K
The vapor pressure of water: 0.2300 atm at 293.15K
and finally, the atmospheric pressure: 0.9940 atm

*I am a little stuck here, because one, it seems like my conversion from grams to moles seems invalid because it is a mixture containing both Aluminum metal and Sand as opposed to just Aluminum alone.

So our main goal is to find the percent yield in correlation to purity. So you already defined the the Ideal Gas Law, which is (PV=nRT):

In this case, P is the absolute gas presure, okay.
In this case, the given V is volume of given gas.
In this case n correlates for gas molecules.
In this case R is the universal gas constant.
In this case T is the absolute temp.

You already provided the universal gas constant as being: (0.082057Lâ€¢atm/Kâ€¢mol)

And you already provided the data; so let us apply it.

Theoretically IGL: PV=nRT
Therefore, calculate your data.

What I would do is to utilize boltzman's constant (k) as substitute in order to make this simpler.

When you have your data, find the % purity by the equation:

actual mass obtained/ calculated mass x 100%

Then you should have your answer.

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Moyhua · « **Reply #581 on:** October 25, 2008, 12:14:36 PM »

Cleaning the house, esp.my room.I redesigned my room and changed all the sheets.

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mistyeyed · « **Reply #582 on:** October 25, 2008, 01:17:51 PM »

Thinking .....thinking of him...hhhhmmmm..just thinking of many things under the sun and out of the sand...dokdok pod...

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ms da binsi · « **Reply #583 on:** October 25, 2008, 10:59:15 PM »

I just ran a 5K marathon this morning!

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LanggamTamsi2 · « **Reply #584 on:** October 26, 2008, 04:14:01 AM »

cleaning my haws today.

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mistyeyed · « **Reply #585 on:** October 26, 2008, 05:16:57 AM »

im on duty today

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Lorenzo · « **Reply #586 on:** October 26, 2008, 06:05:28 AM »

The clouds look so beautiful today. The ones that I've seen so far were that of the cumulus numbus class. Looks like one can just dance around and jump around those clouds--that look so beautiful up there.

The sun is setting right now. And from the view in my apartment, it is gorgeous orange-pink-red.

Guapo kaayo ang view. The Lord is Great.

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Lorenzo · « **Reply #587 on:** October 28, 2008, 08:51:59 AM »

Finished round 2 of exams.

More work!

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John Mars · « **Reply #588 on:** October 28, 2008, 01:14:49 PM »

working

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buwadsanga · « **Reply #589 on:** October 28, 2008, 03:19:50 PM »

nagpamasahe!

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smiffytheninja · « **Reply #590 on:** October 28, 2008, 03:40:33 PM »

Took a quiz, hopefully aced it... lol then I stayed at school until 8PM to study with my chem buddies.

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Lorenzo · « **Reply #591 on:** October 29, 2008, 05:31:50 AM »

I just got my exam results.

God is Great!

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smiffytheninja · « **Reply #592 on:** October 29, 2008, 04:11:09 PM »

I just got my exam results.

God is Great!

From the looks of it, you did well!

Congrats on another exam well done!

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bol-anon nga cebuano · « **Reply #593 on:** October 29, 2008, 10:25:22 PM »

washed the clothes....

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buwadsanga · « **Reply #594 on:** October 30, 2008, 10:03:18 AM »

good congrarts Lor. i hope to see you in the pedestal for US med practitioner. Good luck and may God bless!

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LanggamTamsi2 · « **Reply #595 on:** October 30, 2008, 10:25:57 AM »

I just got my exam results.

God is Great!

dong congrats ya smiffy is right you look happy must be a great result.

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aira_galope · « **Reply #596 on:** October 30, 2008, 11:15:56 AM »

just reading topics here in TB

congrats doc.Lorenzo tke cre... ;)hello everyone!

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mistyeyed · « **Reply #597 on:** October 30, 2008, 01:13:21 PM »

ga surfing..nalingaw ko sa balak namo ni bwads...maayo unta mo daog me sa contest

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buwadsanga · « **Reply #598 on:** October 30, 2008, 02:01:15 PM »

hi mist.... para ni nimo..

ohh inday misty
nganong karon pa kita naila dinhi

daghang katuigan milabay
ug daghan nang calamay nahimo si tatay ug nanay

apan paghinayhinay sa calamay inday
kay delicado ang calamay

maka high blood
o kaha maka low blood
sugal level mutaas sa atong blood

kay ang asukal peligroso
sa kanatong mga tao
usa kini sa hinungdan sa sakit diabetico

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mistyeyed · « **Reply #599 on:** October 30, 2008, 08:22:36 PM »

hahaha...

Ondoy bwad,karon pa ko kakaplag sa giingon nila nga mag tubag...
Diri sa Tb,makayabag...kay sige tubag tubag,sige tambag...
Makalingaw ang mga tubag ug mga tambag...

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