A tornado siren sounded from the center of town. The siren's sound wave traveled at 350 meters per second toward a school. At this velocity, how far did the sound wave travel in
2.2 seconds?
Write your answer as a whole number.

HURRY I NEED IT

Which of the following statements is true? a. elements in the last period are radioactive. b. atomic weight is the same as atomic mass. c. elements in the same group have the same number of electron shells. d. atomic number equals the number of neutrons in the nucleus of an atom.

Which of these would be caused by a chemical change? a) the formation of lava. b) sedimantary rock layering over time. c) metamorphic rock forming from igneous. d) metamorphic rock eroding to form sedimentary rock.

Calcium chloride +gold(1) oxide—>