Of course it is!
Rubidium oxide react with water.
Potassium oxide reacts with water to form soluble potassium hydroxide.
CH3(CH2O)n is the formula for polyethylene oxide.
Yes.
Metal oxide + Water --> Metal hydroxide
Rubidium oxide react with water.
Potassium oxide reacts with water to form soluble potassium hydroxide.
Sort of. Sodium oxide reacts with water to form sodium hydroxide, which is soluble.
CH3(CH2O)n is the formula for polyethylene oxide.
In water, no.
Yes.
Metal oxide + Water --> Metal hydroxide
No. Magnesium oxide is not soluble in water. On contact with water it will form magnesium hydroxide.
No, it is an insoluble compound.
Iron oxide is only soluble when placed in concentrated mineral acids. It is insoluble in organic and water based solvents.
No. You can confirm this on wikipedia.
warm water is all that is needed - it is very soluble