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Question:
Calculate ΔHrxn for the following reaction:
Fe2O3(s)+3CO(g)→2Fe(s)+3CO2(g)
Use the following reactions and given ΔH′s.
2Fe(s)+3/2O2(g)→Fe2O3(s), ΔH = -824.2 kJ
CO(g)+1/2O2(g)→CO2(g), ΔH = -282.7 kJ
If the instantaneous initial rate of reaction is 0.000145 M/s, calculate the initial instantaneous rate of change of H2 concentration. In addition, explain the answer using words.
Normally the alkaline earth carbonates (MCO3; M = Mg^2+, Ca^+2, Sr^+2, Ba+2) are insoluble in water. Why would the method used in this experiment work for calculating the molar mass of the alkaline earth? How would the calculations have to be cha..
how many mmol of acetic acid hc2h3o2 are required to react with the naoh? if your titration solution is 0.424 m in naoh
Provide something that would have a measurement of 50cc, 10.0cm, 5.0x104cm3, 500g, 25kg, 100m, 0.20L, 0.0001km, 1.0x109ug, 250,000mL, 75.0mm,1,000um. Q. How to compute my height of 5'0 into centimeters? And my weight into kilograms
1.664 g of a solid white acid are dissolved in water and completely neutralized by the addition of 45.37 mL of 0.580 M NaOH. Calculate the molar mass of the acid, assuming it to be a monoprotic acid.
0.101 M HNO2 solution contains 0.0067 M H+ ions at 25 oC. What is the percent ionization of this acid under these conditions
Problem- 15.0 moles of gas are in a 3.00L tank at 21.8?C. Calculate the difference in pressure between methane and an ideal gas under these conditions. The van der Waals constants for methane are a=2.300L2?atm/mol2 and b=0.0430 L/mol.
Problem- Calculate the amount of heat (in kJ) required to vaporize 2.41kg of water at its boiling point. (Hvap=40.7 kJ/mol at 100C)
The following equation is not balanced: Na3PO4+MgCl2→Mg3(PO4)2+NaCl Notice that "PO4" appears in two different places in this chemical equation. PO 3-4 is a polyatomic ion called phosphate . What number should be placed in front of Na3PO4 to give the..
the native conformation of a protein represents the lowest energy state of the polypeptide. would you expect it to be
Draw the Lewis structure, and identify the hybridization of the central atom in each of the following molecules and ions. The central atom has been bolded and underlined in the formulas given. (a) XeF4
Determine the molar concentration of the original hydrofluoric acid solution, and find the pH of the original hydrofluoric acid solution.
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