Moles can likewise be figured out from the lot of problem mass and also its molar mass

The inquiry is :

in 2 grams that hydrogen how numerous molecules and how many atoms

mol that Hydrogen - H₂

MW H₂ = 2.01568 u (2 atoms of H)

MW H = 1.00784 u


number that molecules


mol that H


number of atoms


Or a simply method :

1 g the H atoms = 1 mol that H (MW H = 1 g/mol)

2 g the H atoms (in 2 gr H₂) = 2 mole of H

2 g that H₂ molecules = 1 mole that H₂ (MW H₂=2 g/mol)

so in 2 g H₂ there are 6,023.10²³ molecule H₂ and also 2 x 6,023.10²³ atom H

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