How many moles in 120 Calcium
1 answer:
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In 2 g H₂ there are 6,023.10²³ molecules H₂ and 2 x 6,023.10²³ atoms H
<h3>Further explanation </h3>The mole is the number of particles contained in a substance
1 mol = 6.02.10²³
Moles can also be determined from the amount of substance mass and its molar mass
The question is :
<em>in 2 grams of hydrogen how many molecules and how many atoms</em>
- mol of Hydrogen - H₂
MW H₂ = 2.01568 u (2 atoms of H)
MW H = 1.00784 u
- number of molecules
- mol of H
- number of atoms
Or a simply way :
1 g of H atoms = 1 mol of H (MW H = 1 g/mol)
2 g of H atoms (in 2 gr H₂) = 2 moles of H
2 g of H₂ molecules = 1 mole of H₂ (MW H₂=2 g/mol)
so in 2 g H₂ there are 6,023.10²³ molecules H₂ and 2 x 6,023.10²³ atoms H