I would like to know the chemical compostion of the venom in a yellow jacket wasp sting, the dosage...
from Auckland, New Zealand
Is there an effective and affordable way to kill weeds on an organic basis? (i.e. vinegar?)
Why do wet objects shine?
In dealing with bacterial resistance, should doctors use the strongest antibiotics now to kill off...
D. Andrew White
Do different isotopes vary slightly in chemical properties? Or are they the same? i.e. are the...
What are the most recent theories about what existed before our big bang? Have there been one or...
Why do we yawn when we see someone else yawn? Why is it contagious?
How does a lightstick work, and what are the chemicals involved?
If neutrinos have mass, as now seems to be the case, they cannot travel at the speed of light …...
Which would hit a baseball further - a wooden bat or a aluminum bat? Why??
I heard there was a woman named Rosy involved in the discovery of the DNA double helix. Who was she...
justine van der Werf
I have read that when oxygen is condensed to a liquid state, or indeed to a solid state it becomes...
Loubelle I. Depita
from Koronadal City, South Cotabato, Philippines
Why are egg & milk used as antidotes for heavy metal poisoning and what other household remedies...
I've been doing a science fair project testing the effectiveness of Lactaid(TM) lactase. From a...
In Chemistry today, we learned that when HCl is ionized in water, the H2O becomes H3O+, because of...
How does sugar conserve food?
Why are there no penguins in the Arctic, or anywhere in the Northern Hemisphere?
How much does a person's head or skull grow every year? If I'm 16, how much would it grow until it...
If we are making a perfume and we pour alcohol on an orange peel; why would the smell increase the...
Can air in the pleural cavity cause the lungs to expand more fully than they normally would?
Jerry E. Allen
Is it possible to freeze water in a vacuum? Is there a chart that shows water temperature vs....
In science fiction it is common to see P-P fusion, but my reading seems to indicate it is...
I have a physics paper here (don't worry i am not asking you for the answers!) that says each U-235...
My grade 10 biology teacher tells us that blood comes in different shades of red (dimmer and...
Can you tell me what the exact pH of the acid in our stomach?
What kind of weather is on Mercury and Saturn? Does it rain or snow on these planets?
from Andradas-MG- Brazil
When you squeeze out a piece of orange-peel on a flame, it catches fire violently. Why? What is...
from the Internet
How do you find the solubility of a substance?
from Guwahati, Assam, India
Just like 1 mole of water contains Avogadros number of molecules and has the same mass as that of...
Can absolute zero (0 degrees Kelvin or -273.16 degrees Celsius) be registered on a thermometer,...
At what speed does the world's slowest living thing travel? And what is the world's slowest living...
from lahore, pakistan
There is a controversy among my collegues that during agarose gel electrophoresis the band that...
When and how was the kaleidoscope made?
When does each organ system of the human body reach full maturity?
Karl-Alexander berg brisebois
Heisenberg's uncertainty principle tells you that the mass of a particle multiplied by the...
How do scientists modify a virus so that it can be beneficial to a host cell? For example, during a...
I am doing some research on microarrays. I wish to know if mRNA's also have open reading frames as...
Are light and matter the same thing? Can you get matter from light?
Why does an atom have neutrons and why does a specific atom have a limited amount of isotopes. For...
I've a question about solublity, water, and cyclohexanone. Water has a certain solubility in...
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