All Exams Pappers
Tuesday, 19 July 2016
How many atoms of Hydrogen are in 67.2 L of H2 at STP?
67.2 L / 22.414 L/mol = moles of H2 gas
Then:
Moles of H2 gas times 6.022 x 10^23 mol^-1 = molecules of H2
Finally, since there are two atoms of H per molecule:
molecules of H2 times 2 = the answer you seek.
Sir waqar
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