If the base-dissociation constant, kb, for a substance is 4.3 x 10^–10, what does this tell you about ka?
a) ka = 2.3 x 10^–5
b) ka = 1.0 x 10^–4
c) ka = 2.3 x 10^2
d) ka = 1.0 x 10^3

Draw the skeletal structures of two different molecules that are each made of 5 carbon atoms and 12 hydrogen atoms.

Consider the story you just read. all but one of the choices below indicate that something is living.

Read the claim. breakfast is an important meal. it jump starts the body’s process of using calories to break down food. appetite can decrease with age, but going too long without eating causes metabolism to slow down. current research shows that incorporating legumes such as lentils and chickpeas into meals boosts metabolism for twenty-four hours. who might benefit from this claim? people who have a fast metabolism stores that sell exercise equipment people who take vitamin supplements grocery stores that sell legumes