SnO2 (s) + 2 H2 (g) → Sn (s) + 2 H2O (l) What mass of water is produce when 79.0g of SnO2 are consumed in the reaction above?

What layer of the atmosphere is directly above the troposphere?

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.

Ajet plane is speeding down the runway during takeoff. air resistance is not negligible. identify the forces on the jet.