Cho 1,44 gam bột kim loại R (II) vào 100 ml dung dịch chứa 2 muối CuSO4 và FeSO4 sau khi phản ứng kết thúc thu được dung dịch A và rắn B ( có khối lượng 3,76 gam ) a) Xác định kim loại R , biết R hoạt động mạnh hơn Fe và không tan trong nước
b) Tính nồng độ mol của chất có trong A

Oxidation-reduction reactions (often called "redox" for short) are reactions that involve the transfer of electrons from one species to another. oxidation states, or oxidation numbers, allow chemists to keep track of these electron transfers. in general, one element will lose electrons (oxidation), with the result that it will increase in oxidation number, and another element will gain electrons (reduction), thereby decreasing in oxidation number. the species that is oxidized is called the reducing agent or reductant. the species that is reduced is called the oxidizing agent or oxidant. to sum up: oxidation = increase in oxidation state = loss of electrons = reducing agent reduction = decrease in oxidation state = gain of electrons = oxidizing agent part a which element is oxidized in this reaction? fe2o3+3co→2fe+3co2 enter the elemental symbol. view available hint(s) is oxidized part b which element is reduced in this reaction? 2hcl+2kmno4+3h2c2o4→6co2+2mno2+2kcl+4h2o enter the elemental symbol. view available hint(s) is reduced

Citric acid has a ph between 1 and 3.  it is considered to be aa. weak acidb. weak basec. strong based. strong acid

List and describe the neurological effects of the vocs and other air pollutants,as described by dr.theo colborn