[tex]\bf a)\; oxid \; de\;potasiu \implies K_2O[/tex]
[tex]\bf \; b) \;hidroxid \; de \; cupru \implies CU\big(OH\big)_2[/tex]
[tex]\bf c)\; acid\; sulfuric \implies H_2SO_4[/tex]
[tex]\bf \; d)\; carbonat \;de \;calciu \implies CaCO_3[/tex]
#copaceibrainly
