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Chemistry
Karen Dunlap
30 June, 01:36
How many total atoms are in 0.560 g of P2O5
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Answers (
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)
Efrain Camacho
30 June, 04:12
0
16.499 * 10∧ 21 atoms
Explanation:
Given dа ta:
mass of P2O5 = 0.560 g
number of atoms=?
first of all we will calculate the molar mass of P2O5:
P = 2*31 g/mol = 62 g/mol
O = 5 * 16 = 80 g/mol
molar mass of P2O5 = 142 g/mol
Noe we will find the moles of 0.560 g P2O5:
moles = mass / molar mass
moles = 0.560 g / 142 g/mol
moles = 0.0039 mol
now we will find the atoms present in 0.0039 moles:
0.0039 * 6.02 * 10∧ 23 molecules
2.357 * 10∧ 21 molecules
P2O5 consist of 7 atoms:
2.357 * 10∧ 21 * 7 = 16.499 * 10∧ 21 atoms
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