Avogadro's Number & The Molecules

Chemistry Level 1

How many molecules are present in 16 mole's of methane?

Details and Assumptions

Avogadro's Number $N_A = 6.022×10^23$ mole $^{-1}$
Use Atomic Mass of $\ce{C} = 12$ and $\ce{H} = 1$

9.6352×10^24 0.3764×10^23 Mol^-1 1×10^25 0.9635×10^23

1 solution

A Former Brilliant Member
Sep 10, 2016

A= 6.022×10^23 mol^-1 here we've molecular formula of methan

CH4,C=12,H=1 so

molar mass of methan = 1×C+4×H= 12+4=16

Molecules in Methan = N(a)×Number of Moles.

= 6.022×10^23×16

= 96.352×10^23

= 9.6352×10^24 mol^-1

in methan....

No, in a mole is defined as 6.02x10^23 particles. So in one mole of methane there are 6.02x10^23 molecules of methane.

J D - 4 years, 9 months ago

Thanks for informing i made change...

but you said that one mole of methane has Na numbers of molecule .that is wrong you might have heard about mole concept and avogadros no. ...one mole is refer to number of atoms,molecules,ions,electrons present in a substance. it suggest that molar mass of molecule is the 6.022×10^23 times the molecules per mole.

A Former Brilliant Member - 4 years, 9 months ago

that is right that in one mole of methane there are 6.02×10^23 molecules but the you dont know how much is the one mole for methane so u have to calculate its molar mass by its atomic masses.

A Former Brilliant Member - 4 years, 9 months ago

This problem has nothing to do with the weight of methane

J D - 4 years, 9 months ago

16 moles of everything has so much molecules. It is 16*Na

Hasmik Garyaka - 3 years, 8 months ago

Avogadro's Number & The Molecules

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