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Explain why the dichlorofluoresceinate anion is adsorbed onto the surface of the AgCl precipitate (with change in color) immediately past the end point.
A beaker with 100 mL of an acetic acid buffer with a pH of 5.00 is sitting on a benchtop. The total molarity of acid and conjugate base in this buffer is 0.100 M. A student adds 8.60 mL of a 0.380 HCl solution to the beaker. How much will the pH c..
A mixture of gases contains 0.290 mol CH4, 0.240 mol C2H6, and 0.300 mol C3H8. The total pressure is 1.40 atm. Calculate the partial pressure of the gases.
the pressure of a sample of helium in a 1.00-liter container is .988 atm. What is the new pressure if the sample is placed in a 2.00 L container?
what is the volume of the capillary tube and its associated error? What measurement must be made to a higher precision to decrease the error in the volume?
How many grams of hydrogen would have to react to produce 71.9 kJ of energy from the reaction 2H2 + O2 --------> 2H2O + 484kJ?
calculate the volume of nitrogen gas produced from 195.0 grams of sodium azide at 27.0 celsius and 836.0 mmHg pressure
How many moles of Fe(NO3)3 are required to prepare a 354.6 mL solution that is 9.737 moles/liter of NO3-?
A sample of oxygen that occupies 2.5 × 10-6 mL at 508 mm Hg is subjected to a pressure of 1.2 atm. What will the final vol ume of the sample be if the temperature is held constant?
An enzyme reduces the activation energy of a reaction at the temperature of 25 degree celsius from 55 kjmol-1 to 15kJ mol-1 by changing the route of the reaction.
Calculate the number of molecules in 7.00 moles H2S, Using Avogadros number calculate the number of molecules in 7.00 moles H2S
nitrate solution according to the unbalanced equation given below. Hg(NO3)2(aq) + NaI(aq) = HgI2(s) + NaNO3(aq) (a) What volume of Hg(NO3)2 is required for complete precipitation?
Calculate the radius of the metal atom. A hypothetical metal has a face-centered cubic unit cell with the edge length of 4.943 Å.
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