Answer:
0.01958mol
Step-by-step explanation:
you want to go from grams to mols so when set up it looks like this
6.7 x [tex]\frac{1mol}{the mass of aluminum sulfate}[/tex]
(you want what your multiplying to cancel out with the denominator(g cancel out g so your left with mols))
to get the mass of aluminum sulfate you must first find the chemical formula which is
Al2(SO4)3
get the amount of every element
so there is:
2 Al
3 S
12 O
(multiply the three to everything inside the parenthesis)
next find the total mass of everything
Al=26.982g x 2
S=32.06g x 3
O=16g x 12
add everything together and you get 342.144g so you plug that number into the first equation
6.7 x[tex]\frac{1mol}{342.144g}[/tex] → [tex]\frac{6.7}{342.144}[/tex]→0.01958mol
