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Compute the pH of solution made by mixing 5mL of 0.2M HCL with 25mL of 0.2M Na(HCOO) and diluted to 100mL.
Determine delta H of this reaction (kJ/mol H 2 SO 4 ) - When 24.4 mL of 0.500M sulphuric acid ,H 2 SO 4 is combined to 24.4ml of 1.00M potassium hydroxide KOH in a coffee cup calorimeter
calculate the flow rate of solution B neede to concetrate 300 ibm/hr of 55% H2SO4 (solution A) and the resulting flow rate of solution C
What mass of NaOH is needed to precipitate the Cd^{2+} ions from 38.0 mL of 0.480 M Cd(NO_3)_2 solution
A sample of cerium-141 for a diagnostic test was dissolved in saline solution to an activity of 4.5 millicuries/mL. If the patient undergoing the test needs a dose of 10 millicuries
Develop an argument based on bond enthalpies for the importance of SiO bonds in substances common in the Earth's crust in preference to SiSi or SiH bonds
Is the radial distribution function (RDF) ever negative. Mathematically, why or why not? What does that mean physically
The half-life of Chromium-51 is 28 days. Starting with an original sample size of 12.0 ?g, calculate the number of days it will take for the radioactive isotope
calculate the molar mass of a vapor that has a density of 7.535 gl at 14degc and 743
How many hours are required in order to reduce 325 mL of a 0.481 M solution of CuCl2 to 0.226 M in Cu2+ using a 0.978 A current
Explain why the 2.7 μm superficially porous particle enables separations similar to those achieved by 1.8 μm totally porous particles, but the superficially porous particle requires lower pressure.
write the lewis symbol for hydrogen sulfide, distributing the remaining valence electrons so that the hydrogen atoms are in accordance with the duet rule and the sulfur atom is in accordance with the octet rule.
Three gases (8.00 g of methane,CH4 , 18.0 g of ethane,C2H6 , and an unknown amount of propane,C3H8 ) were added to the same 10.0-L container. At 23.0 degrees celusis , the total pressure in the container is 4.40atm . Calculate the partial pressure..
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