Equivalent mass of Fe0.9 O in reaction with acidic K2Cr2O7 is

Calculate the equivalent mass of K2Cr2O7 in acid medium by Oxidation number method.

The atomicity of K2Cr2O7 is

The reaction of 55.8 g sample of iron (Fe) metal with 1.00 mol of oxygen gas is described by the following reaction equation: 4Fe(s) + 3O2(g) → 2Fe2O3(s) Calculate the energy that is released through this reaction based on the quantities of reactants combined. The standard enthalpy of formation, ΔfHϴ, of Fe2O3 is −826 kJ mol–1. (A) 206 kJ (B) 413 kJ (C) 826 kJ (D) 1650 kJ (E) 1101 kJ

m When Fe0.930 is heated in presence of oxygen, it converts to Fe2O3. The number of correct statement/s from the following is mathongomathonga mathonga A. The equivalent weight of Fe0.930 is Molecular weight mathongy mathongu mathongs m 0.79 B. The number of moles of Fe2+ and Fe3+ in 1 mole of Fe0.930 is 0.79 and 0.14 respectively. C. Fe0.930 is metal deficient with lattice comprising of cubic closed packed arrangement of O2 ions. 14. mathongo mathong mathongom D. The % composition of Fe2+ and Fe3+ in Fe0.930 is 85% and 15% respectively. mathongom

What is the mass in kg of 4.02 x 102 mol K2Cr2O7?Question 4Select one:a.1.18 x 105 kgb.1.18 x 102 kgc.1.37 x 10-3 kgd.1.37 x 10-6 kge.1.18 kg