Acetone is not known as hygroscopic.
No, because when you add acetone to acetone, all you are doing is adding more of the volume of acetone to acetone. You are just changing the amount of acetone, not anything chemically happening.
Its a polyatomic ion called Acetate
Acetone exists as a liquid at room temperature but can evaporate to form acetone vapor, which is a gas made up of acetone molecules.
Acetone will not make Styrofoam hard. Putting Styrofoam in acetone will dissolve how to do it is easy. Place a bit of acetone into a bowl then put in the Styrofoam in the bowl and it will dissolve away.
The pKa of acetone is approximately 19.2. This means that acetone is a relatively weak acid.
Non-Hygroscopic
The hair of the tail of horse is hygroscopic material.
Polyol Ester is also hygroscopic
Hygroscopic substances are used to absorb humidity.
Potassium hydroxide is hygroscopic and deliquescent.
As far as I know, the PVC is not hygroscopic, it doesn't absorb the moisture. There are several types of PVC though, so there could be some hygroscopic PVC resin, but I haven't encountered it yet. Normally it is dried by hot air driers, which are not suitable for hygroscopic materials, therefore I assume PVC is not hygroscopic...
No.
yes.
No, because when you add acetone to acetone, all you are doing is adding more of the volume of acetone to acetone. You are just changing the amount of acetone, not anything chemically happening.
Yes, mainly there are 3 types of acetone: regular acetone, acetone with enriched formula, maximum strength acetone.
Sodium chloride has a rare dihydrate, obtained from cold solutions - NaCl.2H2O.
A hygroscopic substance absorbs moisture from the air. If an unknown being is being weighed before and after exposure to air, any increase in weight may suggest it is hygroscopic and has absorbed moisture from the air. Additional testing would be needed to confirm this hypothesis.