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To what volume should you dilute 133 of an 8.20 solution so that 49.0 of the diluted solution contains 4.44? Can someone please show how to solve this?
Calculate Ecell for a galvanic cell constructed from a beaker of 0.0025M HCl with a standard hydrogen electrode at 1atm of pressure
Write the balanced net ionic equations for each of the following compounds with aqueous NH4OH 1. HCl (aq) 2. H2SO4 (aq) 3. HNO3 (aq) 4. NaOH (aq)
consider the following equilibrium system H2(g)+ Br2(g)=2HBr(g) Keq= 14.8 A closed container is initially filled with equal moles of H2 and Br2.When equilibrium is reached the (HBr) is 0.329 mol/L What is the initial (H2)
The iron in .6656 gram ore sample was reduced quantitatively to the +2 oxidation state and then titrated with 26.753g of .02966M KMnO4 soluton. what is the percent Fe2O3 in the sample
Many power plants produce energy by burning carbon-based fuels, which also produces carbon dioxide. Carbon dioxide is a greenhouse gas, so over-production can have negative effects on the environment.
As a technician in a large pharmaceutical research firm, you need to produce 150.mL of a 1.00 M phosphate buffer solution of pH = 7.10. The pKa of H2PO4- is 7.21.
How can one decompose superabsorbent polymers? That is how can one make the dry crystals smaller?
Calculate the quantity of sodium fluoride in kilograms needed per year for a city of 50,000 people if the daily consumption of water per person is 115.0 gallons.
The solubility of air in water is approximately 2.1 x 10^-3 M at 20 degrees C and 1.0 atm. Calculate the Henry's lay constant for air. Also, is the K(H) value of air approximately equal to the sum of the K(H) values of N2 and O2 because these two ..
A sample of ammonia, NH3, contains 3.3 x 1021 hydrogen atoms. How many nitrogen atoms are in this sample?
Aspirin is a monoprotic acid called acetylsalicylic acid. Its formula is HC9H7O4. A certain pain reliever was analyzed for aspirin by dissolving 0.431 g of it in water and titrating it with 0.0430 M KOH solution.
calculate the equilibrium constant keq for the reaction of equimolar amounts of acetophenone and sodium hydroxide to
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