In a thunderstorm, lightning strikes the ground 3km away from you. The speed of sound on a terribly hit day is 0.388 km/s. How many seconds will elapse before you hear the sound? Round to the near tenth of a second.

How did planetesmals form planets? a. they broke apart into smaller chunks.b. they collided and stuck together.c. they cooled and pulled ice together.d. they began to rotate.

Insoluble sulfide compounds are generally black in color. which of the following combinations could yield a black precipitate? check all that apply. na2s(aq)+kcl(aq) li2s(aq)+pb(no3)2(aq) pb(clo3)2(aq)+nano3(aq) agno3(aq)+kcl(aq) k2s(aq)+sn(no3)4(aq)

Match each statement with the state of matter it describes