ХИМИЯ. Найди W А) Na2SO4 Б) HNO3 Помогите пожалуйста
Mr (Na2SO4)= 23*2+32+16*4=142 W (Na)= 46/142*100=32.39% W (S)= 32/142*100=22.5% W(O)=64/142*100=45% Mr (HNO3) =1+14+16*3=63 W(H)= 1/63*100=1.58% W(N)= 14/63*100=22.2% W(O)=48/63*100=76.19%