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Killian Horne
Chemistry
26 April, 12:33
How many total atoms are in 0.260 g of P2O5?
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Cael
26 April, 12:52
0
0.006 * 10²³ atoms
Explanation:
Given dа ta:
Mass of P₂O₅ = 0.260 g
Number of atoms = ?
Solution:
To solve this problem we will use the Avogadro numbers.
The number 6.022*10²³ is called Avogadro number and it is the number of atoms, ions or molecules in one mole of substance. According to this,
1.008 g of hydrogen = 1 mole = 6.022*10²³ atoms.
18 g water = 1 mole = 6.022*10²³ molecules
Thus,
283.88 g of P₂O₅ = 1 mole = 6.022*10²³ atoms.
For 0.260 g:
0.260 g / 283.88 g/mol = 0.00092 mol
0.00092 * 6.022*10²³ atoms = 0.006 * 10²³ atoms
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