Hich of the following equations is balanced correctly?

A.

2 C2H2 + 5 O2 → 4 CO2 + 2 H2O

B.

3 H2O → H2 + 3 O2

C.

2 C3H3 + O2 → 2 CO2 + H2O

D.

Cl2 + 2 KBr → KCl + Br2

What do we call the average motion of moving atoms and molecules in the atmosphere?

6. The potential energy of a freely falling object decreases progressively. Does this violate the law of conservation of energy? Why? Ur when

What are substances called whose water solutions conduct electricity

Does radiometric dating produce exact results

A standard electrical outlet has three wires connected to it: the hot, the neutral, and the ground. There is no potential difference between which pair of wires?

Which term identifies the dark smooth areas on the surface of the moon? craters terrae maria regolith

1. work is a transfer of 2. a small 20-killogram canoe is floating downriver at a speed of 2 m/s. what is the caanoes kinetic energy?

If you are asked to determine an objects speed, what information must you have? A: distance and period of time B: distance and direction C: period of time and direction D: distance and change in position

What is the kinetic energy of a 1150 kg sports car traveling down the road with a speed of 29 m/s?

3. A 2,000-kilogram railroad car moving at 5 m/sec to the east collides with a 6,000-kilogram railroad car moving at 3 m/sec to the west. If the cars couple together, what is their velocity after the collision?