The equation for photon energy, e, is e=hc/λ
where h = 6.626×10−34 j⋅s (planck's constant) and c = 2.99×108 m/s (the speed of light).
what is the wavelength, λ, of a photon that has an energy of e = 3.92×10−19 j ?

How do you lengthen a pattern piece? (family and consumer science, sewing)

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.

How might this scientific phenomena be explained? a paper clip floats on water.