не знаю что писать но спс за Hit the intended recipient you are not the intended recipient you are not the intended recipient you are not the intended recipient you are notified that any dissemination distribution or copying of this email and any attachments is intended only for the intended recipient you are not the intended recipient you are not the intended recipient you are not the intended recipient you are not the intended recipient you are not the intended recipient you are not the intended recipient you are not the intended recipient you are not the intended recipient you are not the intended recipient you are not the intended recipient you are not the intended recipient you are not the intended recipient you are not the intended recipient you are not the intended recipient you are not the intended recipient you are not the intended recipient you.
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CaO+H2O=Ca(OH)2
Ca(OH)2+CuCl2=CaCl2+Cu(OH)2
CaCl2+H2SO4=CaSO4+2HCl
2)S+O2=SO2
2SO2+O2=2SO3
SO3+H2O=H2SO4
H2SO4+BaCl2=BaSO4+2HCl
BaSO4+2HCl=BaCl2+H2SO4