2Al + 3S = Al2S3
1)n(Al) = m/Mr = 5,7/27 =o,211
2) n(Al) = 1/2 * 0,211 = 0,106 моль
3)m(Al2S3) = Mr*0,106 = 150*0,106 = 15,9
2Al + 3S = Al2S3
1)n(Al) = m/Mr = 5,7/27 =o,211
2) n(Al) = 1/2 * 0,211 = 0,106 моль
3)m(Al2S3) = Mr*0,106 = 150*0,106 = 15,9