Children, even those that are vaccinated, may develop rotavirus disease more than once. That is because neither natural infection with rotavirus nor rotavirus vaccination provides full immunity (protection) from future infections. Usually a personâs first infection with rotavirus causes the most severe symptoms.
Because molecules move quicker at higher temperature, causing them to collides more. Since they collides more, reaction occurs to be a lot faster to. And that's why things dissolve quicker in hot water than in room temperature water.
Explain how sodium chloride dissolves in water. it dissociates in water as the positive poles of the water molecules are attracted to the negatively charged chloride ions, and the negative poles of the water molecules are attracted to the positively charged sodium ions.