М (Al(OH)₃) =27 + 16*3 + 3 = 78
ω (Al) =
ω (О) =
ω (Н) =
Al(OH)3
Mr(Al(OH)3) = 27 + 3*16 + 1*3 = 78г
w(Al) = Ar(Al)*n(Al)/Mr(Al(OH)3) = 27*1/78 = 0,35 або 35%
w(O) = 16*3/78 = 0,62 або 62%
w(H) = 1*3/78 = 0,03 або 3%
М (Al(OH)₃) =27 + 16*3 + 3 = 78
ω (Al) =![\frac{27}{78} * 100 = 36,1%](/tpl/images/0944/6503/6142b.png)
ω (О) =![\frac{16*3}{78} * 100 = 61,5%](/tpl/images/0944/6503/ffb27.png)
ω (Н) =![\frac{3}{78} * 100 = 3,8%](/tpl/images/0944/6503/29dd5.png)
Al(OH)3
Mr(Al(OH)3) = 27 + 3*16 + 1*3 = 78г
w(Al) = Ar(Al)*n(Al)/Mr(Al(OH)3) = 27*1/78 = 0,35 або 35%
w(O) = 16*3/78 = 0,62 або 62%
w(H) = 1*3/78 = 0,03 або 3%