25 POINTS which three careers use technologies that apply the Doppler effect?
_Meteorologist
_Doctor specializing in circulation
_Restaurant worker
_Military

What is the percentage of hydrogen in c2h4

How does a catalyst increase the speed of a reaction? a. the catalyst eliminates the activated complex stage, allowing products to form immediately. b. the catalyst lowers the energy level of the reactants, making it easier for them to react. c. the catalyst makes it easier for the activated complex to form, lowering the activation energy. d. the catalyst raises the energy level of the products, making the reaction finish sooner. reset next

The most common form of matter in the universe