What are 4 main properties of covalent bonds

If oil spills continue, all of the following should be expected except (2 points) death of aquatic life. polluted groundwater. decreased soil productivity. increased global temperatures.

If 22.5 liters of oxygen reacted with excess of hydrogen, how many liters of water vapor could be produced?

A40 kilogram skier starts at the top of a 12 meter high slope. at the bottom, she is travelling 10 meters per second. how much energy does she lose to friction