Draw the structures of the aldol addition and condensation products of 3-methylbutanal.

Not a  mixture of two common elements that can be separated by physical means.

Answer it was we, the the whole people, who formed the union. and we formed it, not to give the blessings of liberty, but to secure them: not to the half of ourselves and the half of our posterity, but to the whole people- women as well as men.

Pretty sure it's d. heterogeneous is separated by physical properties.