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In a highschool science class, Jimmy was given 50 milliliters of water and 50 milliliters of ethanol. His process was to combine them collectively after which run an experiment on the combination. When the trainer got here to examine on him, nonetheless, Jimmy’s combination solely contained 94 milliliters. The trainer accused him of consuming a few of the combination in an try to get intoxicated and instantly despatched him to the principal. Jimmy swears that he didn’t drink the combination and that he did not lose any of the liquids by any means. What occurred to the opposite six milliliters, and the way might Jimmy show his innocence?
Answer
When liquids are combined, the molecules can organize themselves in order that they match collectively extra tightly than both of the unique, pure liquids. A great way to visualise that is to image a field utterly stuffed with billiard balls (representing massive molecules). If you pour a small quantity of sand (representing small molecules) into the field, the sand will fill the voids between the billiard balls. The mass within the field will enhance, however the whole quantity is not going to change. This is how Jimmy might show his innocence – if he weighs the combination, it is going to equal the unique weight of the water plus the burden of the ethanol.
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