What is the mole fraction of ethanol in a solution made by dissolving 29.2 g of ethanol

Explanation: Moles ethanol = 21.9 g x 1 mole/46 g = o.476 moles

moles water = 53.6 g x 1 mole/18 g = 2.98 moles

total moles = 0.476 + 2.98= 3.456 moles

mol fraction ethanol = 0.476/3.456 = 0.138

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each chemical family is represented as a group or column on the periodic table. based on chemical properties, there are 6 types of chemical families. group 1 represents alkali metals, group 2 represents alkaline earth metals, groups 3 to 12 represent transition metals, groups 13 to 16 represent non-metals and other metals, group 17 represents halogens and group 18 represents noble gases.