An unknown substance has the following properties: a uniform appearance physically separates by boiling is a liquid at room temperature. What type of matter is this unknown substance?

Alarge marble is dropped in a graduated cylinder with 35ml of water in it.the water level increases to 49ml.what is the volume of the marble

In which phase(s) do the molecules take the shape of the container?

Asample of hydrated tin (ii) chloride (sncl2) has a mass of 4.90 g. when it is dehydrated, it has a mass of 4.10 g. which is the correct chemical formula for the hydrate? sncl2•2h2o          sncl2•4h2o          sncl2•6h2o