Consider the acid-catalyzed hydration of 3-methyl-1-butene. For each of the four steps, add one or two curved arrows to the reactant side to show the mechanism. For step 4, also draw the indicated structures.
Figure:
chemical bonds are shown in the figure

Which type of substance ionizes partially and gives off hydrogen ions when dissolved in water? a. strong acid b. strong base c. weak acid d. weak base

Skills of homo sapiens were found an excavation. the skulls were preserved because the bodies were frozen. so, these fossils are (blank) fossils.the image shows the evolution of skulls beginning 2 to 3 million years ago. based on the image, modern human skulls(blank) ape skulls.

Which of the following describes a situation where competition between producers exists