A potential source of error for this lab could arise if not enough acid was added to the iron solution before the titration was started. This would allow much of the permanganate to go to MnO2 (s) rather than to Mn2 , leading to more permanganate needed for the titration. How would this affect the % of iron found at the end of the experiment

Sorry im just trying to get answers like you are 

Melting increases as mass increases. since alkanes are not branched molecular structures, the one with the heavier mass will have higher melting point.  octane's mp > butane's mp

The answer would be false

(remember to paraphrase)1.  the water cycle in a forest produces sufficient enough rainfall to sustain the rich plant and animal life in it. in a dessert, the water cycle provides just enough water for the animals and plants that reside in it, but not near enough for the life that is in a rain forest.2. since florida is a peninsula, it is susceptible to more intense storms. thus, tornadoes can significantly damage homes and buildings. if severe enough, these storms can also  threaten lives. the residents may have to evacuate or take important measures to stay safe.