General Chemistry Answers

A 4.5 tons of rectangular block of ice has the following dimensions: 6.5 ft in length; 3.25 in width: 1.125 in height. calculate the density in kg/m³ and its specific gravity?

Two reversible reactions in the sequence:

A+B <=> 2C <=> D+E

The rate constants for the reactions are as follows, where ‘1’ and ‘2’ refer to the first and second reaction, respectively:

k₁,f = 0.04M⁻¹ ·s⁻¹ k₁,r = 0.01M⁻¹ ·s⁻¹

k₂,f = 0.10M⁻¹ ·s⁻¹ k₂,r = 0.10M⁻¹ ·s⁻¹

(a) If a solution initially contains 60 mmol/L of A, 40 mmol/L of B, and no C, D, or E, what will the distribution of species be at equilibrium? (Hint: the equilibrium solution composition comprises five unknowns [the concentrations of the five species], which can be determined by writing and solving five independent equations involving those unknowns. The available equations include mass balances that characterize the stoichiometry of the reactions, and equilibrium constant expressions. Try to write and solve five independent equations that characterize the system.)

(b) What is the equilibrium constant for the reaction 0.5A+0.5B <=> C?

 I have packed about half a jar with steel wool and filled it with water and acetic acid 24% and let it soak for 2-3 days. I could´t see any rust on the steel wool, is it possible? If yes, why did´t it rust?

Pure chlorine enters a process. By measurement it is found that 2.4 kg of

chlorine pass into theprocess every 3.1 min. Calculate the molar flow rate of the

chlorine in kilogram moles per hour.

Pure chlorine enters a process. By measurement it is found that 2.4 kg of

chlorine pass into theprocess every 3.1 min. Calculate the molar flow rate of the

chlorine in kilogram moles per hour.

      Ni(NO₃)₃ (aq) + 3KBr (aq) ® NiBr₃ + 3KNO₃

      Ni(NO₃)₃ (aq) + 3KBr (aq) ® NiBr₃ + 3KNO₃