science

Engineering

Eng Math 3

“Mathematics is the cheapest science. Unlike physics or chemistry, it does not require any expensive equipment. All one needs for mathematics is a pencil and paper.” ― Polya George
Chemistry

Chemistry Quiz

Rock salt is a mixture of sand and sodium chloride.Sodium chloride is soluble in water but not in hexane.Sand is insoluble in both water and hexane.What is required to separate