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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 6.50 mL of a 0.260 M HCl solution to the beaker. How much will the pH change? The pKa of acetic acid is 4.760.
Tungsten trioxide (WO3) has a rich yellow color and is often used as a pigment in ceramics and paints. In order to test a ceramic vase for its WO3 content, a 10.00 g sample of the vase was ground and reduced with Pb(Hg) to convert any WO3 to W3 . ..
It required 50.00 mL of 0.1565 M KMnO4 to titrate 2.878 g of the solution containing hydrogen peroxide. What was the mass percentage of H2O2 in the solution
Calculate the freezing point of 0.15 m calcium chloride aqueous solution. Assume that the molal freezing point depression constant of water
Calculate how many mL of 0.100 M NaOH are needed to neutralize completely 26.0 mL of 0.0300 M acetic acid. 2) Calculate how many mL of 0.100 M NaOH are needed to neutralize completely 36.0 mL of 0.0400 M H2SO4 (forming Na2SO4 and water)
A solution composed of 50% ethanol (EtOH), 10% methanol (MeOH), and 40% water (H2O) is fed at the rate of 100 kg/hr into a separator that produces one stream
Write the eqn for each large-extent B/L A/B rxn which occurred on making this mixture. Do this by starting with the rxn that involves the strongest B/L A with the strongest B/L B. Label this rxn (i). Continue writing eqns in this "strength order" ..
if 12.6 grams of iron iii oxide reacts with 9.65 grams of carbon monoxide to produce 7.23 g of pure iron what are the
If the observed wind speed by an anemometer is 5 m/s, what is the wind speed at 100 m height if the value of the index p = 0.15
what would be the effect on your calculated molecular weight of p-dichlorobenzene if your lab partner left the stopper
The Ksp of magnesium phosphate at a given temperature is 9.78 x 10-17. Calculate the molar solubility at this temperature.
The solvent for an organic reaction is prepared by mixing 70.0 mL of acetone (C3H6O) with 73.0 mL of ethyl acetate (C4H8O2). This mixture is stored at 25.0 degrees C.
Given that B(SiO) 640 kJ/mol, show that bond enthalpy considerations predict that silicon-oxygen compounds are likely to contain networks of tetrahedral with SiO single bonds
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