An opposite of the word "to" is from.
The opposite of up is down. So, opposite of the opposite of up is up itself.
The opposite of the opposite is the original value, -9.
The opposite of arrive is to depart or to leave.The opposite of arrival is departure.
The opposite of not out is out.
Acetone is not known as hygroscopic.
The hair of the tail of horse is hygroscopic material.
Polyol Ester is also hygroscopic
Hygroscopic substances are used to absorb humidity.
An unknown being weighed is hygroscopic.
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.
those compounds which have ability to absorb water from its surroundings are known as hygroscopic compounds
Hygroscopic behavior refers to the tendency of a substance to absorb moisture from the air. This can cause the substance to swell, change its form, or become softer. Materials with hygroscopic properties are commonly used in applications such as desiccants, humidity control, and pharmaceuticals.
Sodium chloride has a rare dihydrate, obtained from cold solutions - NaCl.2H2O.