A 1.0 L flask is filled with NO and O2 initially, and after…

A 1.0 L flask is filled with NO and O2 initially, and after the reaction establishes equilibrium, the flask is found to contain 0.0018 mol NO, 0.0012 mol O2 and 0.78 mol NO2. What is the value of the equilibrium constant, Kc, at this temperature? 2NO(g) + O2(g) ⇌ 2NO2(g)

A 1.0 g sample of zinc sulfide, ZnS, is mixed with 100.0 mL…

A 1.0 g sample of zinc sulfide, ZnS, is mixed with 100.0 mL of pure water and 100.0 mL of a 0.100 M sodium sulfide, Na2S, solution. Which set of diagrams best represents the two solutions? The Ksp of ZnS is 3.0×10–23, and both solutions are saturated. Water molecules and sodium ions are omitted for clarity.

What is the theoretical yield (in grams) of iron(III) carbon…

What is the theoretical yield (in grams) of iron(III) carbonate that can be produced from 1.72 g of iron(III) nitrate and an excess of sodium carbonate?  The molar mass of iron(III) carbonate, Fe2(CO3)3, is 291.73 g/mol, and the molar mass of iron(III) nitrate, Fe(NO3)3, is 241.88 g/mol. 2Fe(NO3)3(aq) + 3Na2CO3(aq) → Fe2(CO3)3(s) + 6NaNO3(aq)