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A spring is compressed 10.0 cm from equilibrium as well as the potential energy stored is 50.0 J. Explain what is the spring constant in this case?
Calculate the mass of the reaction mixture in the calorimeter. (To do this, assume that the density of the HCl solution originally in the calorimeter can be approximated with the density of water (1.0 g/mL).
A student determines the mass of a bone to be 23.3751g. A 50 mL graduated cylinder contains 30.3 mL of water. When the bone is placed in the water-filled cylinder,
Consider the following reaction: 2A + B → 3C + D If 63.0 mol A and 42.0 mol B react to form 54.0 mol C. What is the percent yield of this reaction.
Ionization energy is the energy needed to eject an electron from an atom. Compute the ionization energy of a hydrogen atom in its third excited state (n = 4).
Which of the following indicators would be the best to use when 0.050 M benzoic acid (Ka = 6.6 *10^-5) is titrated with .05 M NaOH
The valve between the 2.00L bulb, in which the gas pressure is 1.00 atm, and the 3.00L bulb, in which the gas pressure is 1.50 atm, is opened. What is the final pressure in the two bulbs, the temperature remaining constant
An aqueous solution of an unknown, monobasic weak base has an initial molarity of 0.139 M and a final [OH-] of 0.0000316M. What is the kb of the unknown base
If 2.50 g CuSO4 are dissolved in 8.0 x 102 mL of 0.25 M NH3, what are the concentrations of Cu2+, Cu(NH3)42+, and NH3 at equilibrium
ammonia gas reacts with oxygen to form nitric oxide gas andstem. the ammonia gas is in a closed 3.00 liter flask at 1.2
a 20.00 ml aliquot of 0.120 m cu solution is titrated with a 0.100 m solution of ce4 according to the following
Explain whether or not each coefficient is significantly different from zero.
Using concentrations, the solubility of [Ag+] in a solution of 0.01 M KCl is 1.8 * 10-8. Calculate the percent relative error when using concentrations for the solubility of [Ag+] compared to activities
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