Which weather component describes how fast the wind is moving? Wind direction

Wind pressure

Wind speed

Wind vane

How does kepler second law of planetary motion overthrow one of the basic beliefs of classical astronomy

The activation energy for this reaction is 75 kj·mol–1. the enzyme catalase (found in blood) lowers the activation energy to 8.0 kj·mol–1. at what temperature would the non-catalyzed reaction need to be run to have a rate equal to that of the enzyme-catalyzed reaction at 25°c?

How much mass would a mole of hydrogen molecules contain? recall that hydrogen is diatomic. g/mol