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Use the information given to determine the ?Hof of NO(g) in the reaction below. 4NH3(g) + 5O2(g) ? 4NO(g) + 6H2O(g) ?Horxn = -902.0 kJ (NH3(g) ?Hof = -45.9 kJ/mol; H2O(g) ?Hof = -241.8 kJ/mol)
The radioactive decay of thallium-206 to lead-206 has a half life of 4.20min. Starting with 4.10 x 10^22 atoms of thallium-206
Ferrocene cannot be nitrated using the conventional HNO3-H2SO4 mixed acid conditions
Whats the volume of 1.05 mol of benzene at 20.7 C? The density of benzene of 0.879 g/mL.
Place a coffee cup that holds hot coffee in a cold room and let it sit there for 4 hours. Consider the coffee inside the coffee cup as your system
Galvanized nails are iron nails that have been plated with zinc to prevent rusting. The relevant reaction is Zn2+(aq)+2e??Zn(s) For a large batch of nails
Strontium-90 is one of the products of the fission of uranium-235. This strontium isotope is radioactive, with a half-life of 28.1 yr. Calculate how long it will take for 0.600 g of the isotope to be reduced to 0.310 g by decay.
Two groups of students prepared the compound acetamide. Group A isolated is a solid with a melting point of 80.5 degrees C. Group B obtained a compound with a melting point of 74-77 degrees C
4.5 L of Mg(OH)2 solution was titrated with 5.03 mL of 0.200 M HCl. Calculate the the molarity of Mg(OH)2 solution and the ksp.
Choose the answer in which the oxide with the formula given is correctly characterized as ionic or molecular.
The nitrate ion reaction is positive. In this case, is it accurate to state that nitrate ion was present in the original solution? Brie?y explain, referencing specific chemical reactions to support your explanation.
Glucose oxidation has a standard enthalpy of -2803 kJ/mol. What is the total heat produced by human respiration over
What mass of Fe(OH)3 would be produced by reacting 75.0mL of a 0.0810M Fe(NO3)3 solution with 125 mL of a .150 M NaOH solution.
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