True or false A model for reaction rates, the collision theory is the key to understanding why some reactions are faster than other?

An atom of which element reacts with an atom of hydrogen to form a bond with the greatest degree of polarity ?

Pastoral farming is best described as a. a method of raising livestock and moving herds b. an african method of agriculture c. a method of cultivating crops on poor soils d. a common method of desert farming select the best answer from the choices provided a b c d

If 15 drops of ethanol from a medical dropper weight 0.60g, how many drops does it takes from a dropper to dispense 1.0ml of ethanol? the density of ethanol is 0.80g/ml