Mr = 342
w(Al) = 27*2/342 * 100% = 15.78%
w(S)=32*3/342 * 100% = 28%
w(O) = 12*16/342 * 100% = 56.14%
Объяснение:
Mr = 342
w(Al) = 27*2/342 * 100% = 15.78%
w(S)=32*3/342 * 100% = 28%
w(O) = 12*16/342 * 100% = 56.14%
Объяснение: