Which of the following statements is true regarding scientific hypotheses?
a. there are no valuable hypotheses.
b. a testable hypothesis is valuable only if all evidence supports it.
c. every hypothesis is valuable, whether or not it is testable.
d. a testable hypothesis is valuable, even if evidence shows that it is false.

Chlorine and water react to form hydrogen chloride and oxygen, like this: 2cl2 (g) + 2h2o (g) → 4hcl (g) + o2 (g) also, a chemist finds that at a certain temperature the equilibrium mixture of chlorine, water, hydrogen chloride, and oxygen has the following composition: compound concentration at equilibrium cl2 0.55m h2o 0.57m hcl 0.53m o2 0.34m calculate the value of the equilibrium constant kc for this reaction. round your answer to 2 significant digits.