All categories - 21 September 2007

Chemistry Questions: seperation of a mixture by paper chromatography
After you have done the things down below
To assemble and operate a paper chromatography apparatus.
To study the meaning and significance of Rf values.
To test various food colorings and to calculate their Rf values.
To comparer measured Rf values with standard Rf values.
To separate mixtures of food colorings into their components.

***what can be identified the components of mixture s by means of their Rf values? Rf= d1/d2?

I am stuck on the last qustion please help me with three to four sentences please this is urgent thank you for your cooperation

2007-09-21 22:09:51 · 1 answers · asked by Anonymous in Chemistry

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myth of the first world?

http://www.wndu.com/videoplus/headlines/9834111.html?pollSubmit=y&submit=submit&oid=1&mr=1&cid=6500&pid=9794147

2007-09-21 22:09:20 · 2 answers · asked by novus ordo seclorum 1 in Other - News & Events

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Sign of Jonah; Prove 3 days & 3 nights in tomb?

Sign of Jonah is a miraculous prophecy. Jonah was Alive each time! If Jesus died on Cross then what is the purpose of quoting this prophecy?

Church and its Missionaries are trying to misguide people. they say it is about TIME!

Time factor is not even justifyable?

Justify the Time Factor if you can?

only serious answers plz.

2007-09-21 22:08:28 · 5 answers · asked by aslam09221 6 in Religion & Spirituality

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do you like onions?

2007-09-21 22:07:40 · 9 answers · asked by Anonymous in Other - Food & Drink

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Is it wrong for me to do the gardening in the front yard in my shortest short shorts?

.... when i know the guy across the road is home and his wife isnt ???

2007-09-21 22:06:58 · 17 answers · asked by Anonymous in Polls & Surveys

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when will yousuf khan pathan play in twenty20 worldcup 2007?

2007-09-21 22:06:35 · 3 answers · asked by Anonymous in Cricket

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paying child support without a job in NC?

My friend is in College in NC. She just got pregnant from a guy that's also a college student but doesn't have a job. Although she is only 3 weeks pregnant, I would like to know is there something that she could do besides having a abortion to make this guy pay money(making him get a job) in NC.

2007-09-21 22:06:20 · 6 answers · asked by DVS 1 in Pregnancy

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Are you smarter than me in algebra1?!?

Hello, I've been taking algebra1 and its sorta hard since im not a math person. Can you help me by answering these equations and please show your work!

x+(x+1)+(x+2)=9

(y-2)+(y-1)+y= -3

19n-11-12n-5=5

7h-17-6+4h=17

-2t+3(2+t) = -10

2(x+3)-6x-4 = 8

4z+2(z+7)= -14

-5(1+w)+4w= 8

-3(2-y)+2y= 7

5a-(1-a)+4 = 9

-7 - (-3 - 2g) - 10 =0

1.5k - (k +2.4) = 17.4

3s - (0.5s+7.2) = 32.8

*Remember: Show your work!

2007-09-21 22:06:11 · 8 answers · asked by infamous_l00z3r 2 in Mathematics

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How is it that I of all people made it to lvl 6 without being deleted?

2007-09-21 22:05:46 · 11 answers · asked by Anonymous in Religion & Spirituality

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need help with my bathroom seal round bath?

hey ,
just had a new bathroom tiled and sealed with the sealant round bath , but even thow my wife cleans it it is starting to go like moldy and black dirty looking what does every one else clean theres with ???

2007-09-21 22:05:19 · 13 answers · asked by m4tthrny 2 in Maintenance & Repairs

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