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What amount of barium hydroxide (in moles) must be dissolved in a total of 5.00L of solution in order to have a pH of 12.00
Consider a binary liquid mixture A and B, where A is volatile and B is nonvolatile. The composition of the solution in terms of mole fraction is xA = 0.045 and xB = 0.955
Explain why light intensity is dependent on the distance the detector is from the light source. Describe the mathematical relationship.
how much dry solute would you take to prepare each of the following soluions from the dry solute and the solvent? Part A. 124ml of 0.555M KCl. Part B 10g of .530m KCl. Part C 107g of 5.4% KCl solution by mass.
Twenty grams of a solute are added to 100g of water at 25C. the vapor pressure of pure water is 23.76 mmHg, the vapor pressure of the solution is 22.41 torr.
One beaker contains pure water, another contains salt water, and another contains sugar water. How can you tell the which beaker is Which?
Write a balanced equation including states of matter for the reaction of Zn(H2O)4 in aqueous NaCN.
Which is the equivalence-point pH if 25.0 mL HCOOH (1.8 x 10-4) requires 29.80 mL 0.3567 M NaOH to reach the equivalence point?
How many moles of KHP were weighed out? How many moles of NaOH were required to neutralize the KHP that was weighed out?
The lethal inhalation dose of sarin for a 200 pound person has been determined to be 0.0015 mg. Determine the LD50 of sarin that researchers used to calculate this lethal inhalation dose.
Calculate the value of delta S when 1.85 mol CH3OH (l) of is vaporized at 64.7 C. The normal boiling point of methanol is 64.7 C.
write the ground state electron configuration( using molecular orbital theory) for o2 and show that it is paramagnetic.
Chromium crystallizes in a body-centered cubic lattice (the Cr atoms are at the lattice points only). If the density of the metal is 7.19 g/cm3, what is the unit cell edge length in pm?
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