Помагите плиз!!все!!!!!!!!!!!!

Mr(Cu(OH)2) = 98 w(Cu) = 64/98 *100 = 65,31% Mr(NaH) = 24 w(Na) = 23/24 *100 = 95,83% Mr(H3PO3) = 82 w(H) = 3/82 * 100 = 3,66% w(P) = 31/82 * 100 = 37,8% w(O) = 48/82 * 100 = 58,54% Mr(HClO4) = 100,5 w(O) = 64/100,5 * 100 = 63,68% w(Cl) = 35,5/100,5 * 100 = 35,32% Mr(H2SiO3) = 78 w(Si) = 28/78 * 100 = 35,9% w(O) = 48/78 * 100 = 61,54% Mr(Ag2O) = 232 Mr(Ag) = 216/232 * 100 = 93,1%