Brain Teasers
Nano-Laboratory
Time has passed, and new technologies have been developed. The job of our nano-laboratory is developing new products of "nano" accuracy. For example, if we develop telescopes, we do not allow an error of even a nanometer in the lenses, because this will result in great error when put to use.
The first project of our laboratory is producing nano-purified water, i.e. no ion is allowed to have a concentration of more than 1 nanomole per liter.
No matter how hard we tried, we failed. Why?
The first project of our laboratory is producing nano-purified water, i.e. no ion is allowed to have a concentration of more than 1 nanomole per liter.
No matter how hard we tried, we failed. Why?
Hint
Read carefully.Answer
Water is a weak electrolyte. In water at room temperature, the concentration of hydrogen ion and hydroxide ion each equal 10^(-7) mole per liter, which is 100 times 1 nanomole per liter.Hide Hint Show Hint Hide Answer Show Answer
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Comments
This teaser requires too much science knowledge. Not a trick.
I agree. Isn't this science?
yeah
Great one! Interesting, too! Somehow I managed to guess something like what the answer said...
It's a science teaser--it just requires basic gen. chem. knowledge. Very nice puzzle.
This teaser requires too much science knowledge. Not a trick.
fun. thats all i got to say
At the risk of sounding like an idiot, I put forth the question. What's a nanomole?
Way too hard for me! Geeky!
I had no chance - F for that one
I found that easy! Yay! Ionic constant of water rite!?? =D i feel smart.
AND HOW WAS I SUPPOSED TO KNOW THAT!?!?
Never mind. I know EXACTLY how I was supposed to know that. I should have payed attention in class!
Never mind. I know EXACTLY how I was supposed to know that. I should have payed attention in class!
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