the MOLE con't

watched the most loveable austin powers today to set the mood :P

for all those people who werent here last class and are too lazy to scroll down one entry, ill go over the mole again.

1mole=6.02 x 10^23

if we had a mole of your everyday pea we would have enough to cover earth 200+ times! thats how freakin small an atom is.

atomic mass is equal to the mass of one mole of the element it is the mass of. that was confusing sentence so let me make it easier with an example

the atomic mass of carbon is 12.01 right? so one mole of carbon is 12.01g of carbon! comprende?

molar mass (or molecular mass) is the mass in grams of 1 mole of the molecules of an element or compound.

so lets say you gots your typical water molecule. thats H2O is it escaped your memory. that means we have 2 hydrogen atoms and 1 oxygen atom. so the the molecular mass of one hydrogen atom is 1 gram so 2 must be 2 grams. now all we do is add that to the mass of the oxygen atom (which is 16 grams) and voila! 18g/mol is the molar mass of an H2O molecule.

need me to spell it out how we did that? here i will

2Hydrogen= 2(1.0) + 1Oxygen= 16

thus... 2.0+16=18.0

ahhhhhh make more sense now?

we did some other examples in class and mr doktor started to get tricky with us by making us convert kg and mg and such, but thats all stuff we've learned before so yeah!

haha "that was easy"

here is today's daily double to see if YOU know what you've learned!!!"