5.You are given an unknown substance X and told that it could be one of three substances L, M or N. You carried out chromatography and obtained the two sets of chromatograms below. From the chromatograms, deduce the identity of X.

Describe at least two advantages and two disadvantages of using hydropower as a source of energy.

What happens to the concentration of hydronium ions as the ph of a solution increases? a. hydronium ion concentration stays the same b. hydronium ion concentration decreases c. hydronium ion concentration increases

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