How much of a 120g sample will remain after 300 years

Calculate the molar mass of aluminum oxide (al2o3). express your answer to four significant figures.

What can be done to make a solid solute dissolve faster in a liquid solvent?

An engineer decides to use a slightly weaker material rather than a stronger material, since she knows that the stronger material can break suddenly. this is an example of what? a choosing a material that will show warning before it fails b using composite materials that combine strength c using a material for multiple applications d using design techniques that increase efficiency and reduce cost