Earth’s crust continuously melts and solidifies in the upper mantle. why does oceanic crust solidify faster than continental crust?

(apex) when a cup of water is dropped, as the cup falls, the water in the cup falls out true or false?

Amixture initially contains a, b, and c in the following concentrations: [a] = 0.300 m , [b] = 1.05 m , and [c] = 0.550 m . the following reaction occurs and equilibrium is established: a+2b⇌c at equilibrium, [a] = 0.140 m and [c] = 0.710 m . calculate the value of the equilibrium constant, kc.

How many grams of sodium chloride are in 250ml of a 2.5m naci solution