Calculate the number of atoms?? First to help gets 10 points!?

Moles H = 2.0 g / 1.01 = 2.0 ( two significant figures)

Atoms H = 6.02 x 10^23 x 2.0 = 1.2 x 10^24

first find the number of moles of hydrogen in 2 grams

moles=mass/molecular mass

mol=2/1

mol=2

moles x number of atoms in a mole(avogadros constant)

2 x 6.0221415 × 10^23

=1.2x10^24

hope that helps =D

http://misterguch.brinkster.net/molecalculations.h...

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HOPE I HELPED ! If not tell your mom to help ! Then she can write a note if thats possible !

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first find the number of moles of hydrogen in 2 grams

moles=mass/molecular mass

mol=2/1

mol=2

moles x number of atoms in a mole(avogadros constant)

2 x 6.0221415 × 10^23

=1.2x10^24

HOPE THAT HELPS !

2 atoms

The number of atoms is .211

uh.. all i know from high school is hydrogen has 1 electron