Densidad Del Alcohol ((free)) Access

“Degas?”

Stung, he shoved the equipment toward her: a pycnometer (a fancy, expensive glass vial), a precision scale, and a vial of lab-grade ethanol. Elena read the instructions once, then twice. Mass of empty pycnometer. Mass of pycnometer plus water. Mass of pycnometer plus alcohol. densidad del alcohol

“I used a formula,” Elena said, closing the ethanol vial. “I just didn’t need a calculator. The alcohol wants to be 0.789. The air just got in the way.” “Degas

That was the magic word: meniscus . The curved smile of liquid in a graduated cylinder. Elena had seen her mother check the oil in the car using the same principle. Mass of pycnometer plus water

That night, over celebratory pizza, their father asked what she wanted to be when she grew up.

“I’m going to fail,” he muttered, jabbing a finger at his chemistry data sheet. “My numbers are wrong. The density of alcohol is supposed to be 0.789 g/mL, but I keep getting 0.79.”