A car is traveling at 120km/hr for 4hr. how far did the car travel

it is a physics questions not chemistry

Explanation:

speed=distance/time

so distance =speed * time

=120*4

=480 km

the number of valence electrons for each molecule or ion is shown beneath the structure. remember hydrogen will not have more than two electrons. this hydrogen is part of a covalent bond (sharing two electrons). a double bond here would cause hydrogen to share four electrons with phosphorus.

indicate valleys, hills, steepness and gentleness of slopes.

explanation:

contour lines on a map indicate elevation, or depth. numeric notations on contour lines refer to the level of elevation, or height about sea level.