Science & Mathematics - 8 October 2007

2007-10-08 18:33:57 · 2 answers · asked by snailtrail 1 in Chemistry

A 4 cup mix of 1/5 sugra and 4/5 flour has 1cup added. If this cup is all sugar, what is the ratio of sugar to flour expressed as percentages?
a)18%: 64%
b)36% :64%
c)50% : 64%
d)64% : 36%
e) 80%: 20%

2007-10-08 18:32:20 · 1 answers · asked by shruthi 2 in Mathematics

2007-10-08 18:31:52 · 4 answers · asked by Cindy 1 in Mathematics

1. 3x - 4y = - 5
-x + 3y = -5

2. 6x - 3y = 15
-2x + y = -5

Thank you.

2007-10-08 18:30:53 · 6 answers · asked by Anonymous in Mathematics

I would also like to ask for an explanation to the answers and any online sources that might be available.

2007-10-08 18:30:41 · 3 answers · asked by Anonymous in Engineering

is the result different if it is found by definition or by the shortcut method?

2007-10-08 18:30:00 · 2 answers · asked by student 2 in Mathematics

In the past I used Nitric Acid to kill a few warts. Sure it burns like a lemon juice in a cut! But it does kill them fast! Are there any health risks by burning them with Nitric Acid? It did turn my skin brown...

And for all those movies buffs, it doesn't burn the instant you get it on you. It takes like 15 to 20 minutes...then it burns like white hot poker!

And if Nitric is out of the question, what other Acid beside the lame Salicydic acid that OTC products use?

2007-10-08 18:27:33 · 7 answers · asked by zebra105s 2 in Chemistry

If Diet Coke is heated above 93 degrees fahrenheit for any amount of time, is it true that it's chemical composition turns into what is the equivalence of what we know as rat poison?

Fact or Fiction?

2007-10-08 18:21:18 · 4 answers · asked by Anonymous in Chemistry

Calculate the number of moles of oxygen gas produced from the complete catalyzed decomposition of 5.60ml sample of a 3.5% solution of H2O2. The density of the 3.5% solution of H2O2 is 1.01 g/ml.

2007-10-08 18:16:26 · 3 answers · asked by Anonymous in Chemistry

This is intended to encourage people to explore the seas, oceans, rivers, swamps, lakes and other bodies of water for purposes of seeking sources of medicines most especially for incurable diseases and sources of discoveries and inventions for advance Technologies for the benefit of the entire mankind.

2007-10-08 18:14:15 · 4 answers · asked by Ramy 1 in Medicine

2x + 5y = 7
x + 4y = 2

Thanks.

2007-10-08 18:11:28 · 6 answers · asked by Anonymous in Mathematics

2007-10-08 18:07:04 · 3 answers · asked by enflip23 1 in Earth Sciences & Geology

The purpose is to prevent conversion of land from Agricultural to other things as a counter measure against hunger and also such Agricultural lands are Environment Friendly.

2007-10-08 18:05:08 · 11 answers · asked by Ramy 1 in Agriculture

2007-10-08 18:02:29 · 3 answers · asked by Anonymous in Biology

2007-10-08 18:02:22 · 2 answers · asked by zak 1 in Engineering

If I mix Nitrogen and Oxygen, will it be toxic?

If so, what could I add to reduce the level of toxicity? I'm also concerned that CO2 may be harmful if it is present. Should I be concerned about that or does it matter? Thanks

Thanks

2007-10-08 17:58:41 · 2 answers · asked by Mathematically Deficient 1 in Chemistry

I'm doing a lab report and if someone could please help me know what buffer is that would be great. It says on my paper that buffer is a nonliving chemical solution, but does that make it biological or non biological?

2007-10-08 17:57:43 · 4 answers · asked by asdasdasdasdasdasdasdasdadasdads 2 in Biology

Is this safe?

2007-10-08 17:57:31 · 2 answers · asked by Anonymous in Medicine

2007-10-08 17:55:12 · 2 answers · asked by Cosmodot 5 in Other - Science

2007-10-08 17:54:13 · 2 answers · asked by John V 1 in Chemistry

What is the purpose of the slot in the spectroscope
Im not sure but is it to observe the light and determine the emission spectrum?

2007-10-08 17:51:13 · 1 answers · asked by Anonymous in Chemistry

2007-10-08 17:50:41 · 3 answers · asked by ccutestuff2001 2 in Chemistry

Help!
Mg emits radiation at 285 nm could the spectroscope be used to detect this emission. Explain.



Also if you know this questions it would be great...
If Boron emits radiation at 518 nm what color will Boron impart to a flame.

2007-10-08 17:50:21 · 2 answers · asked by Anonymous in Chemistry

hydrocarbon's can be identified as saturated or not by looking at how many single bonds are there in carbon..but how would I know if water is saturated or not?

2007-10-08 17:48:32 · 4 answers · asked by raida91 2 in Chemistry

i was told that marijuana helps schizophrenia is this true?

2007-10-08 17:47:32 · 7 answers · asked by Jesus M 1 in Medicine

2007-10-08 17:45:27 · 19 answers · asked by Anonymous in Astronomy & Space

2007-10-08 17:44:37 · 4 answers · asked by Anonymous in Mathematics

2007-10-08 17:38:44 · 4 answers · asked by Sofia T 1 in Mathematics

2007-10-08 17:38:17 · 3 answers · asked by lalafunk 2 in Other - Science

Something to do with flying close to the ground at high speeds?

2007-10-08 17:36:15 · 4 answers · asked by Anonymous in Physics