M(S) = 32 г\моль
M(K2SO3) = 2*M(K) + M(S) + 3*M(O) = 2 * 39 + 32 + 3 *16 = 158 г/моль
w(S) = (M(S)/M(K2SO3)) * 100% = (32/158) * 100% = 20,25 %
M(K2SO3)=40*2+32+16*3=112+48=160
M(S) = 32 г\моль
M(K2SO3) = 2*M(K) + M(S) + 3*M(O) = 2 * 39 + 32 + 3 *16 = 158 г/моль
w(S) = (M(S)/M(K2SO3)) * 100% = (32/158) * 100% = 20,25 %
M(K2SO3)=40*2+32+16*3=112+48=160