Nano-LaboratoryScience brain teasers require understanding of the physical or biological world and the laws that govern it.
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?
AnswerWater 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.
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