Answer:
[tex]\boxed{\color{blue}\textsf{The weight of the Aluminium oxide is \textbf{900 grams . }}}[/tex]
Step-by-step explanation:
Here we are given 9 moles of [tex]\sf Al_2O_3[/tex] and we need to find its weight in grams . So we know the formula to find the number of moles as ,
[tex]\qquad\boxed{ \sf N_{(moles)}= \dfrac{Weight(in \ grams )}{Molecular \ weight }}[/tex]
Now the molecular mass of [tex]\sf Al_2O_3[/tex] is , equal to 26*2 + 16*3 = 52 + 48 = 100 g
Using the formula to find the Number of moles :-
[tex]\sf\implies \sf N_{(moles)}= \dfrac{Weight(in \ grams )}{Molecular \ weight } \\\\\sf\implies 9 =\dfrac{ W}{ 100g }\\\\\sf\implies W = 9 \times 100 g \\\\\sf\implies\boxed{\pink{\frak {Weight_{(Al_2O_3)}= 900 grams }}}[/tex]
