You have a rigid tank that contains R-134a at a quality of 0.40 and 200 kPa. Thermal energy is now transferred to the tank from a high temperature source at 35 oC. This energy transfer process contiunes until the tank is at 400 kPa. The initial size of the tank is 0.5 m3. Determine the TOTAL (not specific) entropy change in the source. Give your answer in kJ/K and to FOUR significant digits.

Chlorine and water react to form hydrogen chloride and oxygen, like this: 2cl2 (g) + 2h2o (g) → 4hcl (g) + o2 (g) also, a chemist finds that at a certain temperature the equilibrium mixture of chlorine, water, hydrogen chloride, and oxygen has the following composition: compound concentration at equilibrium cl2 0.55m h2o 0.57m hcl 0.53m o2 0.34m calculate the value of the equilibrium constant kc for this reaction. round your answer to 2 significant digits.

Consider the following unbalanced equation for the combustion of hexane: αc6h14(g)+βo2(g)→γco2(g)+δh2o(g) part a balance the equation. give your answer as an ordered set of numbers α, β, γ, use the least possible integers for the coefficients. α α , β, γ, δ = nothing request answer part b determine how many moles of o2 are required to react completely with 5.6 moles c6h14. express your answer using two significant figures. n n = nothing mol request answer provide feedback

An alpha particle is: a hydrogen atom a nucleus of helium two neutrons an electron