Discover Questions

Can a polymer such as polyethylene -(CH2-CH2)- be used to form a hydrogel with similar properties such as PVA hydrogel? If time is a dimension would that mean time is a field= E / B x G where E,B and G
are electrical ,magnetic ,and gravity fields? Find the limit (if it exists). If it does not exist, explain why. Square root of x -2 / x -4? Solve the equation 4^(13x+7)=12^-x? Chemical equation of sulfate and barium NO3?