You use a microwave to heat your dinner. The frequency of the radiation is 2.37 x 109 cycles/sec. What is the energy of one photon? Planck’s constant! h=6.63 x 10-34 J -sec

The climate of the continental united states is generally 1. tropical 2. temperate 3. arctic 4. highland

Stage in which a typical star has completely stopped fusion

Some liquids can be distilled, but only at temperatures that are so high that it is impractical, or so high the compound decomposes. explain why distillation such compounds at significantly less than atmospheric pressure (some degree of vacuum) would solve this problem.