Calculate δg°' for the reaction a + b < -> c + d at 25°c when the equilibrium concentrations are [a] = 10 um, [b] = 15 um, [c] = 3 um, and [d] = 5 um. r = 8.314 j/mol⋅k. give your answer to the nearest hundredths in j/mol, but only provide the numerical value (i. e. don't include units in your answer).

Achemist wants to extract copper metal from copper chloride solution. the chemist places 0.50 grams of aluminum foil in a solution containing 0.75 grams of copper (ii) chloride. a single replacement reaction takes place. (ii) chloride. a single replacement reaction takes place. which statement explains the maximum amount of copper that the chemist can extract using this reaction? a) approximately 0.36 grams, because copper (ii) chloride acts as a limiting reactant b) approximately 1.8 grams, because copper (ii) chloride acts as a limiting reactant c) approximately 0.36 grams, because aluminum acts as a limiting reactant d) approximately 1.8 grams, because aluminum acts as a limiting reactant

Which of the following is a physical change? a.burning a piece of wood b.sawing a piece of wood in half c.rust forming on an iron fence d.a copper roof changing color from orange to green

Which description best characterization the motion of particles in a solid