1) mCuO=64u+16u=80umCu : mO = 64 : 16 = 4 : 12) mK2O=78u+16u=94umK : mO = 78 : 16 = 39 : 83) mMn2O7=110u+112u=222umMn : mO = 110 : 112 = 55 : 56
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1) mCuO=64u+16u=80u
mCu : mO = 64 : 16 = 4 : 1
2) mK2O=78u+16u=94u
mK : mO = 78 : 16 = 39 : 8
3) mMn2O7=110u+112u=222u
mMn : mO = 110 : 112 = 55 : 56