This formula equation is unbalanced.

p4(s) + cl2(g) pcl3(l)

which coefficient should be placed in front of pcl3 to balance this equation?
1246

If an astronaut takes an object to the moon the following is true (choose only one). a the mass will change but the weight will be the same. b both the mass and the weight of the object will be the same. c the weight will change but the mass will be the same. d both the mass and the weight of the object will change.

Abicycle slows down when the rider applies the brakes. what type of energy transformation is involved in this example? a. kinetic energy into heat energy b. heat energy into potential energy c. potential energy into kinetic energy d. kinetic energy into mechanical energy

You've already seen the value of 9.8 in this lesson. what's this value called? what quantity does it represent?