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)

A large ebony wood log, totally submerged, is rapidly floating down a flooded river. If the mass of the log is 165 kg, what is the buoyant force acting on the submerged log?

This sheep has a mass of 90 kg and it is currently standing on the edge of a cliff looking down. If the sheep has 24,500 J of potential energy due to its height, how high is the cliff?

How many people does it take to build a rocket ship

You run a balloon on your head and it becomes negatively charged. the balloon will be most attracted to

Xavier throws a tennis ball to his friend Olaf at a 20° angle relative to the ground with an initial velocity of 18 m/s. The tennis ball travels 30 m until Olaf catches it.

Karen has a mass of 51.9 kg as she rides the up escalator at Woodley Park Station of the Washington D. C. Metro. Karen rode a distance of 63.1 m, the longest escalator in the free world. The acceleration of gravity is 9.8 m/s 2.

What is the current in a 160V circuit if the resistance is 2Ω?

A thermometer is placed in water in order to measure the water's temperature. What would cause the liquid in the thermometer to drop? A. The molecules in the water spread apart. B. The molecules in the thermometer's liquid spread apart. C.

The amount of energy carried by a wave is proportional to the square of the wave's A. frequency B. amplitude C. wavelength D. period ... ?

The pressure at the bottom of a jug filled with water does not depend on