Which chemical equation correctly shows the formation of water from hydrogen and oxygen?

A. H2 + 20 + H2O

B. 2 H2 + O2 + 2 H2O

C. H2 + O2 + H2O

D. H + O2 + H2O

1) what is the power in horsepower of a 100 watt light bulb? what is the power in kilowatts of a 200 horsepower engine? 2) if a cars engine is providing 3000 n of force to keep the car moving at 5 m/s, what is the engine’s effective power? 3) how many gallons of water will be pumped from a well 30 feet deep by a 1/2 hp engine in 1 minute? (1 gallon weighs 8.34 pounds)