Consider this question posed at the beginning of the task: Does Earth’s gravitational force field act on objects that aren’t touching Earth’s surface? Did the investigation answer the question? Explain whether it gave enough evidence to support the idea that an invisible gravitational force field exists.

What is the relation between concentration of reactants and the rate of chemical reaction?

Astudent reacts 13 moles of iron with 21 moles of oxygen according to the following equation:

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.