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One of the steps in the commercial process for converting ammonia to nitric acid is the conversion of NH_3 to NO: 4NH_3 + 5O_2 yields 4NO +6H_2O In a certain experiment, 2.05g of NH_3 reacts with 3.76g of O_2 How many grams of NO and of H_2O will form?
The rainwater is mainly composed of NaCl 1 mM and its pH is 4.6. Without using a computer, determine the concentration of Ca2+in runoff water.
A certain quantum mechanical system (NOT the hydrogen atom) has the energy levels shown in the diagram below. The energy levels are indexed by a single quantum number n that is an integer.
How can ethidium ions cause mutations in DNA and what type of interactions exists between the DNA and ethidium ions?
Initial Concentration of azomethane Initial rate Exp. 1 1.13 x 10-2 M 2.8 x 10-6 M/s Exp. 2 2.26 x 10-2 M 5.6 x 10-6 M/s
The solubility of AgCrO4 is several times greater than that of AgCl, so the red precipitate cannot form until all the chloride ions have effectively been removed from the solution.
Calculate the osmotic pressure of the mannitol solution of part( b ) when it is measured against pure water, and compare it withthe osmotic pressure of the ideal solution.
what is the freezing point and boiling point of each of the following solutions: a)65.0g of glucose,C6H12O6, anonelectrolyte, added to .112kg of water. b).320 mol of sucrose, C12H22O11, a nonelectrolyte, dissolved in 1.50 kg of water.
Calculate the molality of methanol in a solution prepared by dissolving 75.0 mL methanol, CH3OH (density = 0.791 g/mL), in 150 g ethanol.
calculate the number of moles of KOH in 5.50 mL of a 0.360 M KOH solution.What is the pOH of the solution?
A solution containing 3.50 of sodium carbonate is mixed with one containing 5.00 of silver nitrate. How many grams of sodium carbonate are present after reaction?
Describe the reaction as endothermic or exothermic, and reversible or irreversible. B) A reaction has Horxn = 5.0 kJ/mol and a forward activation energy, Ea = 55 kJ/mol. What is the activation energy for the reverse reaction?
What are the factors that can influence the rate of a chemical reaction? 2- Why do the rates of most chemical reactions slow down over time?
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