iPad 6:58 PM Assignment 2 Problem 3.29 Mixing and Volume Additivity A mixture of

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iPad 6:58 PM Assignment 2 Problem 3.29 Mixing and Volume Additivity A mixture of methanol (methyl alcohol) and water contains 20.00% water by mass. Ideal Specific Gravity Correct. The specific gravity of water at 20°C is about 0.9982; the specific gravity of methanol at 20°C is about 0.7917 Assuming volume additivity of the components, estimate the specific gravity of the mixture at 20°C. SG- 826 21.8 What volume of this mixture is required to provide 450.0 mol of methanol? liters SHOW SOLUTION By accessing this Question Assistance, you will learn while you earn points based on the Point Potential Policy set by your instructor Attempts: 1 of 5 used Actual Specific Gravity Your answer is partially correct. Try again. Repeat part (a) with the additional information that the specific gravity of the mixture at 20 C is 0.8469 (making it unnecessary to assume volume additivity). 20.6 What is the real volume of the mixture required to provide 450.0 mol methanol? liters 3.06 What percentage error results from the volume-additivity assumption? By accessing this Question Assistance, you will learn while you earn points based on the Point Potential Policy set by your instructor

Explanation / Answer

Percent error in volume

= (ideal value - actual value) * 100 / (actual value)

= (21.8 - 20.6)*100/20.6

= 5.825%

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