ng ta tien hanh tn sau
1.cho a gam hon hop vao 6ooml dd HCl nong do x mol/l.sau pu thu dc dd A va khi B.dem co can dd A thu dc 27,9 gam muoi khan.
2.cho a gam hh vao 800 ml dd HCl cung nong do voi tn 1,sau pu thu dc dd C,co can dd C thu dc 32,35 g muoi khan.
a/xac dinh % ve khoi luong kl cua hh 2 kl neu a=7,5gam
b/tinh V khi B o dktc va x(mol/l).gia thiet kha nang pu cua Mg va Al la nhu nhau
aqhl
minhduy2110