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Education

[328450J]

is converting atoms and molecules the same?

[bannanaiscool]

@328450J Pretty much!

Chemguy

[Youcantbeseriousa123]

I am probably the only one in the world getting this wrong but I come up with 7.7625x10^33 :( where does the -13 come from?

[bannanaiscool]

You're punching it in backwards...Think about how 10^11 atoms of Zn would be far less than one mole of Zn (which would be 6.02x10^23 atoms, right?) Your answer says that there's more than a mole, not less. Try again and watch your exponents...

Chemguy

[cmreel]

isn't Avogadro's Number exact... infinite... not used to determine significant figures.

[bannanaiscool]

No. Absolutely not.

6.02 has 3 significant digits. This is absolutely correct.

Chemguy

[DaniFrano007]

you rock, i wish you were my teacher

[akosiivanangeles001]

damn.. your better than our teacher :P

[MrBlade0001]

Shouldn't be 7.7625 * 10^-11 mol of Zn instead of 7.7625 * 10^-13 mol of Zn?

[glowingdarkmatter25]

If Avogadro's number is at 6.02 X10^23 why doesn't it change when you round it to 24...why is it one mole ? or is it more than a mole....

[Accidulation]

You are a great teacher! Much better than the one I have teaching me. Thank you so much for your videos, you have been of such great help! Keep making more videos! Thanks!

[shubh008]

the enthusiasm and energy level with which you teach is really appreciable!!!

keep loading thes awesome wids....chemguy

[panikku11]

I LOVE your energy, I learn so much more from you than my chem teacher..

[notafraidtouseit]

ur going to be immortal !

[majom9111]

@Panzer0127 maybe because they ARE crap? I know my teachers are.

IDK how they even got liscences to teach!!! XD

[majom9111]

@ta1ntedxl0vee Same here XD

Thanks Chemguy!!!