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

Select the correct answer. when carbon dioxide dissolves in water, it sometimes reacts with water to form carbonic acid as in this balanced equation: co2 + h2o → h2co3. if 495 milliliters of carbon dioxide at 25°c and 101.3 kilopascals reacts with excess water, what is the theoretical yield of carbonic acid? use the periodic table and the ideal gas resource a. 0.889 g b. 1.10g c. 1.27g d. 2.02g what's the answer! quick!

Apump contains 0.5 l of air at 203 kpa.you draw back on the piston of the pump, expanding the volume until the pressure reads 50.8 kpa. what is the new volume of the air pump

What is the percent by mass of oxygen in fe2o3