A ground state hydrogen atom absorbs a photon of light having a wavelength of 92.05 nm. What is the final state of the hydrogen atom?

What mass of natural gas (ch4) must you burn to emit 276 kj of heat?

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.

Find the midpoint of a segment with endpoints of 4-3i and -2+7i