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Sagot :
1) List the quantities.
Sample: 700 g Ni3(PO3)2
2) Convert gramas of Ni3(PO3)2 to moles of Ni3(PO3)2.
The molar mass of Ni3(PO3)2 is 334.0241 g/mol.
[tex]mol\text{ }Ni_3(PO_3)_2=700\text{ }g\text{ }Ni_3(PO_3)_2*\frac{1\text{ }mol\text{ }Ni_3(PO_3)_2}{334.0241\text{ }g\text{ }Ni_3(PO_3)_2}=2.10\text{ }mol\text{ }Ni_3(PO_3)_2[/tex]3) Convert moles to particles.
1 mol = 6.022*10^23 particles.
[tex]parciles\text{ }Ni_3(PO_3)_2=2.10\text{ }mol\text{ }Ni_3(PO_3)_2*\frac{6.022*10^{23}\text{ }particles\text{ }Ni_3(PO_3)_2}{1\text{ }mol\text{ }Ni_3(PO_3)_2}=1.26*10^{24}\text{ }particles[/tex]700 g Ni3(PO3)2 is equal to 1.26*10^24 particles.
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