Methanol has a molecular mass of 320 gmol and a density of 079 gmL The

Methanol has a molecular mass of 320 gmol and a

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OH; also called wood alcohol) as a fuel. Methanol has a molecular mass of 32.0 g/mol and a density of 0.79 g/mL. The combustion of methanol occurs according to the following equation: 2CH 3 OH + 3O 2 2CO 2 + 4H 2 O In a particular reaction 2.00 L of methanol are reacted with 80.0 kg of oxygen. a. What is the limiting reactant? (5 points) CH 3 OH b. What reactant and how many grams of it are left over? (5 points) 49.37mol CH 3 OH : X = 2 : 3 X= 74.055 mol O 2 74.055* 32 = 2369.76g 80000 – 2369.76 = 77630.24 g O 2 c. How many grams of carbon dioxide is produced? (5 points) 49.37 mol 11. An iron bar weighed 664 g. After the bar had been standing in moist air for a month, exactly one-eighth of the iron turned to rust (Fe 2 O 3 ). Calculate the final mass of the iron bar and rust. (5 points) (Reference: Chang 3.111) 644g / 8 = 83g Fe = 55.85g, Fe 2 O 3 = 159.7g 111.7 : 159.7 = 83 : X X = 118.67g Fe 2 O 3 644-83+118.67 = 699.67g 4 Copyright © 2016 by Thomas Edison State University . All rights reserved.

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