Răspuns :
M HCL = 35.5 + 1 = 36.5 g / mol
M Al2O3 = 2×27+3×16=54+48=102 g/mol
M Na2O = 23×2 + 16 = 46+16 = 62 g/ mol
M Al2O3 = 2×27+3×16=54+48=102 g/mol
M Na2O = 23×2 + 16 = 46+16 = 62 g/ mol
M HCl = A H + A Cl = 1 + 35.5 = 36.5 g/mol
M Al2O3 = 2A Al + 3A O = 27*2 + 3*16 = 54+48 = 102 g/mol
M Na2O = 2A Na + A O = 2*23 + 16 = 62 g mol
M Al2O3 = 2A Al + 3A O = 27*2 + 3*16 = 54+48 = 102 g/mol
M Na2O = 2A Na + A O = 2*23 + 16 = 62 g mol