Which of the following is a pure substance? a. solution
b. compound
c. homogeneous mixture

Agroup of students were investigating the force of gravity. they began by dropping a foam ball from a height of 3 meters into a bucket of sand. the ball hit the sand in 0.306 seconds. they dropped additional balls of approximately the same diameter, but of different masses. here is the data they collected. based on this experiment and the collected data, what would their conclusion be?

Due in 40 explain in terms of frame of reference if you’re inside a moving train everything on the outside can seem to be moving

Which of the following are molecules? a. al b. ag c. mgcl2 d. nacl e. c3h8