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 ?

Which statement is true about ionic compounds?

what is your question? collegechemistry 5+3 pts in november 1987, a massive iceberg broke loose from the antartic ice mass and floated free in the ocean. the chunk of ice was estimated to be 98 mi long, 25 mi wide, and 750 ft thick. a typical backyard swimming pool contains about 24,000 gallons of water. how many of these pools could you fill from the water in this iceberg? (assume the iceberg is a rectangular solid of the above dimensions and consists of water only). express answer in scientific notation.

2ki + pb(no3)2 → 2kno3 + pbi2 determine how many moles of kno3 are created if 0.03 moles of ki are completely consumed.