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Jenz08

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Jenz08

Biology

Please could you give me a current use of genetic engineering to produce and crop and to produce a medicine?! Thanks
21:08 Mon 01st Jun 20093 answers, last by Jenz08 12:50 Tue 02nd Jun 2009
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Jenz08

Biology

What are some commerical, social, and ethical issues that are associated with genetic engineering?!
20:39 Mon 01st Jun 20095 answers, last by ll_billym 23:25 Tue 02nd Jun 2009
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Jenz08

Please Help ASAP...

Could anyone help me with the mechism of Electrophillic substitution of 3-chloro- benzene with a nitronium ion?! Thanks
14:22 Thu 21st May 20092 answers, last by factor30 17:20 Fri 22nd May 2009
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Jenz08

Please Help ASAP...

Could anyone help me with the mechism of Electrophillic substitution of 3-chloro- benzene with a nitronium ion?! I know that an alkenes undergoes electrophilic addition because of the high density...
14:16 Thu 21st May 20091 answer, last by unigirl 23:41 Thu 21st May 2009
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Jenz08

What are Indicies?!

I am having some trouble understanding what indicies are. I have looked online for a defintion, but it confuses me moreso, so could anyone please answer this question What are indicies?! This will...
14:47 Wed 20th May 200910 answers, last by Jenz08 22:46 Mon 01st Jun 2009
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Jenz08

urgent ... help

how many grams of sucrose is needed to make up 0.2m in a 200cm solution??
12:14 Tue 21st Apr 20094 answers, last by Jenz08 22:48 Mon 01st Jun 2009
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Jenz08

Chemistry

In terms of 'sima-polarised' bonds or not.... why does haloalkanes undergo elimination easily at low conditions?
14:56 Mon 23rd Mar 20091 answer, last by theprof 21:59 Tue 24th Mar 2009
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Jenz08

Temperature and KC

How would the value for KC change with temperature?! In terms of endothermic and exothermic reactions?! I understand that in a exothermic reaction, an increase in temperature isn't liked and as a...
10:01 Mon 23rd Mar 20092 answers, last by rmoore04 20:18 Sun 29th Mar 2009
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Jenz08

Bonding

In terms of sigma-polarised bonding, why do haloalkanes undergo elimination easily at 'low' conditions?!
15:54 Thu 05th Mar 2009
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Jenz08

Electricity

What is the main difference between alternating current (A.C.) produced by a generator and a direct current (D.C.) supplied by a battery?!
12:27 Wed 04th Mar 20094 answers, last by ChuckFickens 23:47 Wed 04th Mar 2009
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Jenz08

Biology

What does endogenous mean?! & Name and infection which it would cause?!
18:12 Tue 24th Feb 20095 answers, last by Jenz08 11:28 Wed 11th Mar 2009
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Jenz08

Haloalkane reactions

Is Nucelophilic addition and Nucelophilic substitution reaction the same?! If not what is nucleophilic addition?!
12:33 Wed 11th Feb 20091 answer, last by rmoore04 20:23 Sun 29th Mar 2009
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Jenz08

Physic on Time Constant

So in calculating the time constant of a timing circuit using a capacitor C of value 4.7?F and a resistor R of value 8.2kΩ, you get... Time constant = 4.7/1000000 x 8200 = 38 milliseconds Now you...
12:19 Wed 04th Feb 20098 answers, last by Jenz08 23:20 Wed 04th Feb 2009
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Jenz08

What is the time constant of a timing circuit?!

How do you calculate the time constant of a timing circuit using a capacitor C of value 4.7?F and a resistor R of value 8.2kΩ?!
10:31 Tue 03rd Feb 20092 answers, last by Jenz08 12:20 Wed 04th Feb 2009

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