The frequency of a given region of the electromagnetic spectrum ranges from
4 × 1014 to 7.5 × 1014 hz. the speed of light is 2.998 × 108 m/s. which waves are found in this region?

If a planet rotates 360 degrees during a 24 hour time period, what does that tell us about the planet? a. the middle of the planet is in darkness b. the seasons on the planet vary every day. c. the planet runs on a 12-hour time clock. d. the temperature on the planet varies daily.

Each of the following compounds contains a metal that can exhibit more than one ionic charge. provide systematic names for each of these compounds. (a) cr(clo3)6 (b) mo(cn)6 (c) cr2(so3)3 (d) v(clo2)2 (e) v(cn)5 (f) os(clo2)4

What does x represent in the formula for the compound xcl4?