Respuesta :
9.331 x [tex]10^{23}[/tex] many individual oxygen atoms are contained in a sample of P₂O5 that also contains 0.620 moles of P.
What are moles?
A mole is defined as 6.02214076 × [tex]10^{23}[/tex]of some chemical unit, be it atoms, molecules, ions, or others. The mole is a convenient unit to use because of the great number of atoms, molecules, or others in any substance.
[tex]P_2O_5[/tex] → [tex]2P^+{^5} + 5O{^-^2}[/tex]
Given:
0.620 moles of P
Let us assume a mole of oxygen atoms.
2÷0.620 = 5÷a Cross Multiply
2a = 0.620 x 5 Divide both sides by 2
a= 0.310 x 5 Combine
a = 1.55 moles of oxygen.
Atoms are there in 1.55 moles of oxygen:
1 mole of anything contains 6.02 x [tex]10^{23}[/tex] items of that mole
1.55 moles of oxygen contain x atoms of oxygen
1÷1.55 = 6.02 x [tex]10^{23}[/tex] ÷x Cross multiply
1 x a = 1.55 x 6.02 x [tex]10^{23}[/tex] Combine
a = 9.331 x [tex]10^{23}[/tex]
Hence, 9.331 x [tex]10^{23}[/tex] many individual oxygen atoms are contained in a sample of P₂O5 that also contains 0.620 moles of P.
Learn more about moles here:
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