Write the equilibrium‑constant expression for the reaction A ( s ) + 3 B ( l ) − ⇀ ↽ − 2 C ( aq ) + D ( aq ) in terms of [ A ] , [ B ] , [ C ] , and [ D ] , as needed.

Using the periodic table, complete the table to describe each atom. type in your answers. a ? b? c? d? e? f?

The tilt of the earth's axis of rotation is responsible for the a) ocean's tides. b) size of the moon. c) brightness of stars. d) earth’s seasons.

Choose an equation that represents an enzyme-catalyzed reaction. (a) enzyme + substrate → enzyme-substrate complex (b) enzyme + substrate ←−→ enzyme + products (c) enzyme + substrate ←−→ enzyme-substrate complex → enzyme + products (d) enzyme + substrate ←−→ enzyme-substrate complex → enzyme-substrate complex + products