Please help Which of the following reactions is an example of a double displacement reaction?
Select one:
a. NaCN + HBr --> NaBr + HCN
b. K + Cl2 --> KCl
c. C6H14 + O2 --> CO2 + H2O
d. H2O2 --> H2O + O2

2) Which of the following reactions is an example of a double displacement reaction?
Select one:
a. CH4 + O2 --> CO2 + H2O
b. Na2S + HCl --> NaCl + H2S
c. KClO3 --> KCl + O2
d. Fe + S8 --> FeS

Ineed with a, b, c, d, and e on the long answer

Select the correct answer from each drop-down menu. daniel and sanya are scientists. daniel is studying whether the increasing frequency of tropical storms is affecting coastal erosion. sanya is investigating whether the discharge from industrial plants has any impact on the ph concentration of freshwater swamps in the surrounding area. which fields of science are daniel’s and sanya’s studies most closely related to? daniel’s field of study is related to science, and sanya’s field of study is related to .

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