Respuesta :
Answer: The mass of hydroxyapatite that can be converted is 0.733 grams
Explanation:
To calculate the number of moles, we use the equation:
[tex]\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}[/tex] .....(1)
Given mass of tin(II)fluoride = 0.115 g
Molar mass of tin(II)fluoride = 156.7 g/mol
Putting values in equation 1, we get:
[tex]\text{Moles of tin(II)fluoride}=\frac{0.115g}{156.7g/mol}=0.00073mol[/tex]
The chemical equation for the reaction of tin(II)fluoride and hydroxyapatite follows:
[tex]SnF_2+2Ca_5(PO_4)_3(OH)\rightarrow 2Ca_5(PO_4)_3F+SnO+H_2O[/tex]
By Stoichiometry of the reaction:
1 mole of tin (II) fluoride reacts with 2 moles of hydroxyapatite
So, 0.00073 moles of tin (II) fluoride will react with = [tex]\frac{2}{1}\times 0.00073=0.00146mol[/tex] of hydroxyapatite
Now, calculating the mass of hydroxyapatite by using equation 1, we get:
Moles of hydroxyapatite = 0.00146 moles
Molar mass of hydroxyapatite = 502.3 g/mol
Putting values in equation 1, we get:
[tex]0.00146mol=\frac{\text{Mass of hydroxyapatite}}{502.3g/mol}\\\\\text{Mass of hydroxyapatite}=(0.00146mol\times 502.3g/mol)=0.733g[/tex]
Hence, the mass of hydroxyapatite that can be converted is 0.733 grams
