A wastewater has a BODs of 205 mg/L at 20°C. The reaction rate constant at that temperature has been determined to be 0.12/day (base e). (a) (b) Find the ultimate carbonaceous BOD. Find the the reaction rate constant at 10°C. Find BOD5 at 10°C.

A barytes composed of 100 percent BaSO4 is fused with carbon in the form of cokecontaining 6 percent ash (which is infusible). The composition of the fusion mass is:BaSO4 11.1%BaS 72.8%C 13.9%Ash 2.2 100% Reaction: BaSO4 + 4 C → BaS + 4 COFind the :4.1 Excess reactant. (10)4.2. The percentage of the excess reactant. (3)4.3. The degree of completion of the reaction. ?

Calculate the equilibrium concentration for hydroxide ions for a reaction of 0.0200 M Cr(OH)3(aq) with 0.200 M hydroxide to form tetrahydroxychromium (III) ion with a Kf = 3.00x1020.

Over the past several years, the atmospheric ozone concentration over Antarctica has decreased during the winter. The reaction that causes this is shown below:NO(g)+O3(g)⟶NO2(g)+O2(g)Using the data obtained at 100 degree Celsius, determine the rate law for this process: Trial [NONO] [O3O3 ] Rate 1 1.00x10−61.00x10^-6  3.00x10−63.00x10^-6  6.60x10−56.60x10^-5  2 1.00x10−61.00x10^-6  6.00x10−66.00x10^-6  1.32x10−41.32x10^-4  3 1.00x10−61.00x10^-6  9.00x10−69.00x10^-6  1.98x10−41.98x10^-4  4 3.00x10−63.00x10^-6   9.00x10−69.00x10^-6   1.78x10−31.78x10^-3  None of these. rate=k[NO] rate=k[NO][O3] rate=k[NO]^2[O3] rate=k[NO][O3]^2

W.W. Heckert et E. Mack studied the decomposition of ethylene oxide in gas phase at 25°C (C₂H4O → CH4 + CO), and found that it is a first-order reaction in the reactant. Determine the reaction rate constant using the date given below, for a reaction that begins with a pure reactant: time (min) Ptot (torr) 0 115.30 6 122.91 7 124.51 8 126.18 10 129.10