Asked by michelle
What is the best way to measure an opaque viscous liquid?
a. With a syringe
b. With a graduated cylinder
c. With a balance
All Answers 1
Answered by
GPT-5 mini
AI
c. With a balance.
Reason: opacity prevents accurate reading of a meniscus and viscosity makes volumetric transfer (syringe or graduated cylinder) imprecise because liquid clings to surfaces. Best practice is to weigh-by-difference: tare an empty container, add the liquid, weigh again and subtract to get mass. If you need volume, divide the mass by the liquid's density at the measurement temperature. Also control/record temperature and use a clean, dry container for best accuracy.
Reason: opacity prevents accurate reading of a meniscus and viscosity makes volumetric transfer (syringe or graduated cylinder) imprecise because liquid clings to surfaces. Best practice is to weigh-by-difference: tare an empty container, add the liquid, weigh again and subtract to get mass. If you need volume, divide the mass by the liquid's density at the measurement temperature. Also control/record temperature and use a clean, dry container for best accuracy.
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