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Select all of the correct statements about equilibrium from the choices below. At equilibrium the rates of forward and reverse reactions are equal. As a reaction proceeds backwards toward equilibrium the reverse rate drops. At equilibrium all reactions stop. At equilibrium the rate of change of reactant concentration is zero. As a reaction proceeds forward toward equilibrium the reverse rate constant rises. As a reaction proceeds backwards toward equilibrium the product concentrations drop.
calculate the volume of air at 30 degrees celcius and 1 atm that is needed to burn completely 10 grams of propane. assume that air is 21 percent oxygen by volume
Antacid tablets contain a variety of bases such as NaHCO3, MgCO3, CaCO3 and Mg(OH)2, Only NaHCO3 has appreciable solubility in water. write a net ionic equation for the reaction of each antacid with aqueous HCl. include the state of each species. ..
What is the titer of the iodine solution of the .1000g sample of pure ascorbic acid 23.52 ml I2.
A mixture of amino acids is subjected to paper electrophoresis at pH 6.0. The amino acids present in the mixture are Val, Glu, Phe, Ser, and Lys. Which amino acids will migrate toward the cathode? Toward the anode? Explain.
N2O2 draw valence bond drawings for the resonance forms-clearly labeling the sigma and pi bonds and hybrid orbitals.
What mass of ethanol, C2H5OH a nonelectrolyte, must be added to 10.0 L of water to give a solution that freezes at -10.0C? Assume the density of water is 1.0 g/mL. Kf of water is 1.86C/m.
calculate the N12+ concentration of a solution made by mixing .020 mols of Ni(NO3)2 into 1.0 L .22 M NH3
A student prepared a stock solution of the assigned compound by weighing 2.345 grams of Cu(NO3)2. 6H20 and diluting it with water to a final volume of 25.00mL.
After adding the two portions into the calorimeter setup and following the procedure outlined in the experiment, you determine the temperature of the mixed portions of water to be 45*C. what is the heat capacity of the calorimeter?
An industrial vat contains 2,500 liters of an acidic aqueous solution with a pH of 3.5. How many grams of NaOH need to be added to raise the pH to 4.3?
What is the molecular formula of a compound with the empirical formula NO¿ and a molar mass of 138.02 grams per mole?
Find the volume of a molar solution - What volume of a 0.250 molar solution of silver nitrate, AgNO 3 , is required to react with 18.6g of potassium phosphate
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