Why are hurricanes so frequent in areas close to the equator?

True or false, the three major scales used to measure earthquakes are mercalli scale, richter scale and magnitude scale

Aluminum reacts with chlorine gas to form aluminum chloride via the following reaction: 2al(s)+3cl2(g)→2alcl3(s) what is the maximum mass of aluminum chloride that can be formed when reacting 32.0 g of aluminum with 37.0 g of chlorine? express your answer to three significant figures and include the appropriate units.

Gymnast always perform on padded mats. how does the mats protect the gymnast