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Rick Anderson asks

Is the air we exhale pure carbon dioxide? If not, then what is it?

Tridib Das from Guwahati, Assam, India asks

Just like 1 mole of water contains Avogadros number of molecules and has the same mass as that of...

Zambi Donburi from Brisbane, Queensland, Australia asks

How did we (as a race) evolve eyebrows and eyelashes. The way I understand it is that to evolve...

Edward Driedger asks

How do touch lamps work? If one person touches the touch pad and someone else taps his other hand,...

Aliahs Ahmadzai from Maple Ridge, BC asks

When you get a lighter and get a piece of metal and you turn on the lighter and put it over the...

Lee Ming Fei asks

Why does chalk, a cylinder, always break into three pieces when it falls, and not into two or four...

Ian Hancock from Calgary asks

In Chemistry today, we learned that when HCl is ionized in water, the H2O becomes H3O+, because of...

Darrin asks

Why does an atom have neutrons and why does a specific atom have a limited amount of isotopes. For...

Corinne Keffer from Halifax, NS asks

I have a liquid crystal display screen computer monitor. I am looking for unbiased information on...

Alexa Clay asks

How do scientists modify a virus so that it can be beneficial to a host cell? For example, during a...

Jonas Malmgren asks

Is the interstellar space between the galaxies completely empty? Not even a single star or a nebula?

Citre asks

What kind of weather is on Mercury and Saturn? Does it rain or snow on these planets?

David Graveline asks

What are the most recent theories about what existed before our big bang? Have there been one or...

David Keirsey asks

How did neutrinos get to be objects of such low energy? Neutrinos are supposed to have been...

Eric Johnson asks

Is it harmful to inhale sulfur which has been heated?

B.Krystol from Jasper asks

Why is Isobutane ( C4H8) a gas at 25 C and Dodecahedrane ( C20H20) a solid at 25 C?

Charcoal from the Internet asks

What makes classifying dogs in breeds different from classifying humans in races? I thought that...

Derrick Smith from Jacksonville asks

In science fiction it is common to see P-P fusion, but my reading seems to indicate it is...

Tyler Salo asks

When rockets were sent to Jupiter, did scientists get any readings? Does Jupiter have a solid...

Ram Ajore from Delhi, INDIA asks

What are the ways in molecular biology to show confirmation of hybridization on a solid surface for...

Samantha from London asks

At which age do the nasal bones and the mandible complete ossification?

Steven Hoaglund asks

Galileo said, "in a vacuum, all objects fall at the same speed." Well, I have an idea that might...

Karl-Alexander berg brisebois from Dunham asks

Heisenberg's uncertainty principle tells you that the mass of a particle multiplied by the...

Markovic Ljiljana asks

When and how was the kaleidoscope made?

David Critch asks

My grade 10 biology teacher tells us that blood comes in different shades of red (dimmer and...

A.E. asks

Why do we have five fingers? My idea is that one of nature's themes is "having enough." It's like a...

Loubelle I. Depita from Koronadal City, South Cotabato, Philippines asks

Why are egg & milk used as antidotes for heavy metal poisoning and what other household remedies...

Alexandra asks

What's a gathering of frogs called? What's a gathering of toads called?

patric hedlund asks

According to my family, a comet streaked through the sky the morning one of my uncles was born. His...

Russell J. Wells Jr. from Dearborn Hts., Mich. asks

Why is the efficiency of most all lasers limited to .1% to 30%? What are the limiting factors? What...

Brandi asks

Can air in the pleural cavity cause the lungs to expand more fully than they normally would?

Leo Capistrano asks

How long would a single molecule of a radioactive element last? If the half-life of U-235 reduces...

Totoro asks

How do antiperspirant products work? Could you use one on your chest to prevent sweating?

Ethan Diener asks

If body temperature is 98.6 degrees, why does 98.6 degree water feel hot when you place it on your...

Robert Steinhaus from Castro Valley asks

Can a fast breeder reactor like the famous Candu series of Canadian designed fast reactors be...

Gaston Fournier asks

NASA has recently detected the presence of ice on the moon. Since the moon is surrounded by void...

Karan Rana from Atlanta asks

I am doing some research on microarrays. I wish to know if mRNA's also have open reading frames as...

Robert Wahl asks

Is it true that bats don't pass their food through but vomit it up while they are hanging upside...

Ed from Port Orchard, Washington, USA asks

Do magnets become less massive over time? It requires energy to hold a magnet on the refigerator...

Ron Belmont asks

How do you calculate potential energy for an object which is sitting on the floor? PE=mgh, which...