Help me out with some Chemistry

meta

Problem from Sparknotes regarding Avogadro's Law:

How many Hydrogen Atoms are there in 10 grams of methane, CH4?

Sorry I know this is probably a n00b question but Im still new to chemistry and im trying to get a good grasp on it before I go back to College in the fall. Thanks in advance.

Anal Probe Deluxe

http://en.wikipedia.org/wiki/Unit_conversion

http://en.wikipedia.org/wiki/Equivalent_weight

Foist you need to divide the number of measured (10g CH4) grams by the molar mass of the atom/compound you want to measure (16 g/mol) . Then divide by Avogadro's number thus obtaining how many atoms are in the measurement.

meta

Anal Probe Deluxe wrote: »

http://en.wikipedia.org/wiki/Unit_conversion

http://en.wikipedia.org/wiki/Equivalent_weight

Foist you need to divide the number of measured (10g CH4) grams by the molar mass of the atom/compound you want to measure (16 g/mol) . Then divide by Avogadro's number thus obtaining how many atoms are in the measurement.

Ahh fuck it all seems so simple when explained by someone else, but when faced with a problem to do on my own, I simply blank out a bit. Thanks for the help though, it is greatly appreciated.

Anal Probe Deluxe

meta wrote: »

Ahh fuck it all seems so simple when explained by someone else, but when faced with a problem to do on my own, I simply blank out a bit. Thanks for the help though, it is greatly appreciated.

It's always easy in concept, never in execution. I did the same thing the summer before starting school. Basic chem probably won't come up first semester unless you're majoring in it or something.

Greenbull

1. Work of molecular mass (16gmol^-1)

2. Divide molecular mass by mass to find number of moles ( 16/10=0.625).

3. Multiply number of moles by avogadro constant (0.625 x 6.022 x 10^23).

4. Multiply number of H atoms in 1 CH4 (4 x 0.625 x 6.022 x 10^23).