? Peroxide After Bleach?
Posting as separate note so everyone can view replies, thinking many who may have interest probably aren't reading my too much bleach question. I'm puzzled how only a couple or a few tablespoons of...
Forum Discussion
westend wrote:Old-Biscuit wrote:2oldman wrote:
6.023 x 10^23
That works for Particles but not for Mass or Volume
Isn't Avagadro's constant the amount of atoms in one mole? I always thought the use was to define how many moles of a substance by weight, using the constant and atomic weight.
Yes. One mole of something (usually atoms or molecules) is Avogadro's number of them, just as a gross of something (usually not atoms or molecules) is 144 of them.
A mole of an element has a mass, in grams, equal to the atomic weight of the element. (This means, essentially, that a mole of protons or neutrons weighs a gram. It's technically defined in terms of carbon 12, as are the atomic weights, but for many practical purposes one can ignore the mass of electrons and pretend that protons and neutrons alone have mass.)
