Which one of the following is not a balanced equation?

A. 2Ca (s) + O2 (g) → 2CaO (s)

B. Ca (s) + O2 (g) → CaO (s)

C. 2Li (s) + 2H2O (l) → 2LiH (aq) + H2 (g)

D. CH4 (g) + 2O2 (g) → CO2 (g) + 2H2O (g)

You are waiting in line to use the diving board at your local pool. While watching people dive into the pool from the board, you realize that using a diving board to spring into the air before a dive is good example Newton's third law of motion.

Gravity and magnetism are _ forces. A. contact B. field C. tension D. normal

According to accepted atomic models metals are good conductors because their?

Heat engine x has an efficiency of 67%. heat engine y has an efficiency of 82%. which best compares these two heat engines?

which will produce bigger acceleration: a force of 10.0 N acting on a mass of 5.0 kg, or a force of 5.0 N acting on a mass of 10.0kg?

This particle is found in the nucleus and adds mass to the nucleus, but changing its number does not change what the element is. This particle is the A. proton. B. photon. C. neutron. D. electron.

Projectile motion is an example of what kind of motion

What can change scientific knowledge?

6. What is ductility?

During practice, a baseball player hits a very high fly ball, and then runs in a straight line and catches it. Which had the greatest displacement during the time period from the hitting of the ball to its catching