According to the following reaction, how much energy is evolved during the reaction of 72.5 g Cl2?  (Assume that B2H6 is present in excess)             B2H6 (g) + 6 Cl2 (g)  →  2 BCl3 (g) + 6 HCl (g)         ΔH°rxn = -1396 kJ

What is the relation between concentration of reactants and the rate of chemical reaction?

The reactions shown here can be combined to make the overall reaction c(s) + h2o(g) ⇌ co(g) + h2(g) by reversing some and/or dividing all the coefficients by a number. a. c(s) + o2(g) → co2(g) k=1.363×10^69 b. 2 h2(g) + o2(g) → 2 h2o(g) k=1.389×10^80 c. 2co(g) + o2 (g) → 2 co2(g) k=1.477×10^90

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