Answer to Question #138728 in General Chemistry for aj

Question

What is the percent by mass of a solution prepared by dissolving 2.25 g of glucose (C6H12O6) in 39.54 g of ethanol?

Answer 1

Mass of glucose = 2.25g

Mass of ethanol = 39.54g

Total mass = ( 2.25 + 39.54)

= 41.79g

Percentage per mass of glucose

(2.25/41.79)(100)

Glucose% = 5.4%

Percentage by mass of ethanol

=100% - 5.4%

Ethanol % = 94.6%