For the following, round off each number to three significant digits, and then express it in scientific notation. 1) 3.478
2) 65.345
3) 4444
4) 3.1416
5) 55555
6) 45.35455

What semimetal can form four single covalent bonds.

Using data from seismic waves, geologists have learned that earth’s interior is made up of several

If we compare and contrast electromagnetic waves with sound waves, all but one statement is true. that is a) sound waves require a medium to travel while electromagnetic waves do not. b) electromagnetic waves can travel through the vacuum of space while sound waves cannot. c) electromagnetic waves must have a medium in which to travel, but sound waves can travel anywhere. eliminate d) sound waves must bounce off of matter in order to travel while electromagnetic waves do not require matter to be present.