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In a laboratory 6.80g of Sr(NO3)2 is dissolved in enough water to form 0.450L of solution. A 0.120L sample is withdrawn from this stock solution as well as titrated with a 0.0300M solution of Na2CrO4.
Explain what volume of Na2CrO4 solution is needed to precipitate all the Sr+2(aq) as SrCrO4?
Sketch a qualitative MO diagram for [Ni(NH3)6]2+ and identify the portion of the diagram considered by crystal-field theory. Imagine the ammonia ligands were all exchanged with a pi-donor ligand
As of 2007 world record for swimming 1500.0 m in a long course pool is 14 min 34.56 s. if we follow this rate then calculate how many seconds would be taken by a man to swim 0.850 miles?
When solid iodine is introduced into an evacuated vessel at 25 degrees Celcius, some of the iodine sublimes. Predict how the enthalpy, entropy, and free energy change in the system
If the desalination plant wants to produce 1400.0 gallons of drinking water per day, how many gallons of brine must the plant take in per day. The density of fresh water is 1.000 g/cm3. The density of brine is 1.025 g/cm3. What mass of waste brine..
Explain how many moles of argon gas are in a sample that is collected over water at 27oC vapor pressure of water is 27torr if the volume of the gases is 430mL and the atmospheric pressure is 754torr
a the solubility product for lead bromide is6.3x10-6. what is the molar solubility of lead bromidein moles per liter of
A compound is 80.0% carbon and 20.0% hydrogen by mass. assume a 100 gram sample of this compound. How many moles of each element are in this sample
Vitamin C (L-ascorbic acid; MW = 176.0 g/mol) is a weak acid (pKa = 4.863). Suppose a 500.0 mg tablet is dissolved in water and titrated with 0.100 M NaOH. How many mL of NaOH are required to reach the equivalence point?
Explain why bubbles are observed to emerge from the jar when it is in the boiling water. b. Explain why the lid "pops down" on the jar top soon after removing the jar from the boiling water.
What will be the total vapor pressure (in torr) of a solution prepared by mixing equal masses of the two liquids?
When 4.00g of hydrogen nuclei fuse to form helium in the sun, 0.0265g of matter is converted into energy. Given that the speed of light = 3.00x10^8 m/s and that a jolue = kg*m^2/s^2, calculate how much energy is given off.
For the iodination of acetone, to determine the order with respect to each reactant the method of initial rates was used. Seven reactions were run. Why can the reactions be done in any order
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