How long does the earth take to go round the sun​

Correct relationship between molecular formula and empirical formula

What is a main difference between a mixture and a pure substance? a mixture is only a liquid, but a pure substance can be in any state.a mixture looks the same throughout, but a pure substance does not.1 a mixture can vary in composition, but a pure substance has a set composlo a mixture can be made up of a single compound, but a pure substance car

Which process describes vaporization that takes place below the surface of a liquid? condensation melting boiling evaporation