обчисліть молярні маси речовини за їх формулами:H2S,F2,CaCO3,SO2,NaOH,K2SO4,CuSO...

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обчисліть молярні маси речовини за їх формулами:H2S,F2,CaCO3,SO2,NaOH,K2SO4,CuSO4,5H2O

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salazzzkina Mr(H2S)=1×2+32=34
Mr(F2)=19×2=38
Mr(CaCO3)=40+12+16×3=100
Mr(SO2)=32+16×2=64
Mr(NaOH)=23+16+1=40
Mr(K2SO4)=39×2+32+16×4=174
Mr(CuSO4)=64+32+16×4=160
Mr(5H2O)=10×1+16=26

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