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Sagot :
Number if atoms in 259 g of [tex]C_12H_2_1O_9[/tex] is [tex]5.04*10^{23}[/tex]
We know that according to Avogadro's law , number of atoms in one mole of molecule is [tex]6.022*10^{23}[/tex] .
In given question we have to find number of atoms in 259 g of [tex]C_12H_2_1O_9[/tex]
The molar mass of [tex]C_12H_2_1O_9[/tex] is given that is [tex]309.29 g/mol[/tex]
Therefore total number of moles = [tex]given mass / molar mass[/tex]
Number of moles = [tex]259/309.29[/tex]
=[tex]0.8374[/tex]
Thus, number of atoms in 0.8374 mole of [tex]C_12H_2_1O_9[/tex] is given by
= [tex]0.8374 * 6.022 * 10^{23}[/tex]
= [tex]5.04*10^{23}[/tex]
To know more about Avogadro's law
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