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At a particular temperature, a 3.0 L flask at equilibrium contains 2.4 moles of Cl2, 1.0 mole of NOCl, and 4.5 x 10-3 moles of NO. Calculate K at this temperature for the following reaction:
2NOCL (g) > < 2NO (g) + Cl2 (g)
If the endpoint is surpassed in the back-titration with NaOH, will the reported amount of antacid in the sample be too high or too low?
The vapor pressure of pure acetone (propanone) is 266 torr. When a non-volatile solute is added, the vapor pressure of acetone above the solution falls to 232 torr. What is the mole fraction of the non-volatile solute in the solution?
If 7.50 g of the unknown compound contained 0.250 mol of C and 0.500 mol of H, how many moles of oxygen,O, were in the sample?
Determine the concentration of the total available acid of the apple juice express your answer in moles/L?
During the electolysis of fused BaCl2, which reaction occurs at the cathode? (1)Chloride ions are oxidized (2) Chloride ions are reduced (3) Barium ions are oxidized (3) Barium ions are reducued
What is the pH of an aqueous solution with a hydrogen ion concentration of [H ] = 1.6 × 10-9 M? b) What is the hydroxide ion concentration, [OH-], in an aqueous solution with a hydrogen ion concentration of [H ] = 1.6 × 10-9 M?
A solution of iodine was standardized with ascorbic acid. A 0.1150 g sample of ascorbic acid required 28.37 mL of I2 to reach a starch end point. Calculate the molarity of the iodine solution.
what is the concentration of oygen dissolved in water at 20 degrees celsuis in equilibrium with a gas mixture at 0.81 atm.
C2H5OH(l) + C3H7COOH(l) C3H7COOC2H5(l) + H2O(l) Determine the mass of ethyl butanoate produced if 3.30 mol of ethanol is used.
How many grams of sodium hydroxide are needed to react completely with 50.1 mL of 0.145 MCoCl2 solution?
At constant volume the temperature of 2.0atm was 325K. The temperature is increased to 400K. What is the new pressure of the gas?
what change in the number of moles of Ag occurs in the system? (2)what change in the concentration of Ag occurs in the system?
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