用重量法测定待测组分中的Fe,沉淀形式为Fe(OH)3?nH2O,称量形式为Fe203,换算因数应为

A:Fe/Fe(OH)3?nH20 B:Fe/Fe203 C:2Fe/Fe203 D:Fe203/Fe E:Fe203/2Fe

用重量法测样中的FeO,沉淀形式为Fe(OH)3?nH2O,称量形式为Fe203,换算因数应为

A:FeO/Fe(OH)3?nH20 B:Fe0/Fe203 C:2FeO/FE203 D:Fe203/Fe E:Fe203/2Fe

用重量法测定某试样中的Fe,沉淀形式为Fe(OH)3·nH2O,称量形式为Fe2O3,换算因数为

A:Fe/Fe(OH)3·nH2O B:Fe/Fe2O3 C:2Fe/Fe2O3 D:Fe2O3/Fe E:Fe2O3/2Fe

用重量法测定某试样中的Fe,沉淀形式为Fe(OH)3·nH2O,称量形式为Fe2O3,换算因数为

A:Fe/Fe(OH)3·nH2O B:Fe/Fe2O3 C:2Fe/Fe2O3 D:Fe2O3/Fe E:Fe2O3/2Fe

(On the whole) , ambitious students (are much likely) to succeed in their studies than (those) (with) little ambition.

A:On the whole B:are much likely C:those D:With

(On the whole), ambitious students (are much likely) to succeed in their studies than (those) (with) little ambition.

A:On the whole B:are much likely C:those D:with

(On the whole), ambitious students (are much likely) to succeed in their studies than (those) (with) little ambition.

A:On the whole B:are much likely C:those D:with

(On the whole), ambitious students (are much likely) to succeed in their studies than (those) (with) little ambition.

A:On the whole B:are much likely C:those D:with

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