Suppose the filter paper was wet when you recorded the mass of the filter paper with the Fe₂O₃. Would this error make your experimental mole ratio too high or too low? Explain your answer.

Many components of cars are made of iron. In the cold, snowy winter months in Minnesota, salts are poured onto the roads to help melt ice. Why are cars more likely to rust in Minnesota compared to warmer climates? What can you do to minimize the rusting of a car in Minnesota?