Iron reacts with oxygen in the air to make rust. Which of the chemical equations matches the reaction above?
A.
4Fe + 3CO2 2Fe2C3O3
B.
4Fe + 3O2 2Fe2O3
C.
2I2 + 3O2 2I2O3
D.
2I2 + 3CO2 2C3I2O3

Ineed this asap part i: scientific method what is the difference between science and pseudoscience? what is the scientific method?

If two objects at different te,peraure are in contact with each other what happens to their temperature

Answer asap need by wednesday morning explain how a buffer works, using an ethanoic acid/sodium ethanoate system including how the system resists changes in ph upon addition of a small amount of base and upon addition of a small amount of acid respectively. include the following calculations in your i. calculate the ph of a solution made by mixing 25cm3 0.1m ch3cooh and 40cm3 0.1m ch3coo-na+. [ka = 1.74 x 10-5 m] ii. calculate the ph following the addition of a 10cm3 portion of 0.08 m naoh to 500cm3 of this buffer solution. iii. calculate the ph following the addition of a 10cm3 portion of 0.08 m hcl to 200cm3 of the original buffer solution.