Which of the following statements correctly describe a photon? Select all that apply.

1) A high-frequency photon has low energy.

2) All photons have the same amount of energy

3) Matter cannot absorb or emit a fraction of a photon.

4) A photon is a particle of electromagnetic radiation.

Melissa is interested in her family tree and how her family has changed over its many generations. melissa probably more closely resembles

Which statement is true about this reaction? 14n+1h 15o it is a practical source of energy on earth. it occurs only outside the solar system. its product is heavier than each of its reactants. it shows the critical mass of an element.

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.