Ninety-nine percent of all the matter that can be abserved in universe exists as?

Amixture of gaseous sulfur dioxide and oxygen are added to a reaction vessel and heated to 1000 k where they react to form so3(g). if the vessel contains 0.669 atm so2(g), 0.395 atm o2(g), and 0.0851 atm so3(g) after the system has reached equilibrium, what is the equilibrium constant kp for the reaction: 2 so2(g) o2(g) ⇌ 2 so3(g)

In this chemical reaction, 325 grams of barium (ba) react completely. how many moles of lithium (li) are produced?

Using data from seismic waves, geologists have learned that earth’s interior is made up of several