What is the second most abundant element in earths crust? a. magma b. oxygen c. silicon d. carbon

The pressure in a fluid is affected by which characteristics of that fluid

Consider this equilibrium: n29) + o2(g) + 2no(c).nitrogen gas and oxygen gas react when placed in a closed container. as the reaction proceeds towards equilibrium, what happens to the rate of thereverse reaction?

Why is retrograde motion an apparent motion