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A 50.0-mL solution of 0.031 9 M benzylamine was titrated with 0.050 0 M HCl. Calculate the pH at the following volumes of added acid: Va = 0, 12.0, 30.0,0.5 Ve, Ve, and 35.0 mL.
A certain quantity of helium gas is at a temperature of 27degrees C and a pressure of 1.00 atm. What will the new temperature be if its volume is doubled at the same time that its pressure is decreased to one half of its original value?
dissolving 3.00g of impure CaCO3 in excess HCl produced .656L of CO2- measured at 20C and 782mmHg. calculate the percent by mass of the CaCO3 in the sample.
confirm that the z-component of orbital angular momentum is a basis for an irreducible representation of A2 symmetry in C3v
How does the first ionization energies change as you go from left to right across the periods; explain what causes the trend to fluctuate
Phenolphthalein is one of the most common indicators. What are its colors in acidic and in basic solutions?
Which element will have five electrons in its Lewis symbol? a. argon b. boron
a sample of chloroform is found to contain 10.5 g of carbon 93.1 g of chlorine and 0.88 g of hydrogen. if a second
if 4.3 ml of benzaldehyde are mixed with 1.6 ml of acetone, then calculate the theoretcial yield of dibenzalacetone in grams
Trouton's rule states that the entropy of vaporization of nanopolar liquid is 88 JK-1 mol-1.. the normal boiling point of 1-octene is 121.3 C and its melting point is -101.73 C determine the enthalpy of vaporization of this compound.
What is the mass of a magnesium block that measures 2.3 cm * 3.5 cm * 1.5 cm? The density of magnesium is 1.738 g/cm^3
a gas mixture with a total pressure of 770 contains each of the following gases at the indicated partial pressures 257
Calculate the change in pH when 6.00 mL of 0.100 M HCl(aq) is added to 100.0 mL of a buffer solution that is 0.100 M in NH3(aq) and 0.100 M in NH4Cl(aq)
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