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A mixture of 6.00 g He and 22.0 g Ne has a pressure of 530. mm Hg. What is the partial pressure of each of the gases?
1) Many household cleaning products contain oxalic acid H2C2O4, , a diprotic acid with the following dissociation constants: Ka1=5.9E-2 and Ka2=6.4E-5 Calculate the equilibrium concentration of C2O4^2- in a 0.20 M solution of oxalic acid
A solution is prepared by dissolving 10.5 g ammonium sulfate in enough water to make 100.0 mL of stock solution. A 13.00 mL sample of this stock solution is added to 55.00 mL of water. Calculate the concentration of ammonium ions and sulfate ions ..
When sodium carbonate reacts with hydrochloric acid, the carbonic acid that is formed immediately breaks down into carbon dioxide and water.
If C 6 H 12 O 6 yields C 2 H 5 OH+CO 2 then balance this equation and determine what the percent yield for the reaction is if 575.0 grams of C 6 H 12 O 6 glucose yields 126.4mL of C 2 H 5 OH ethanol?
Calculate the concentrations of all species in a 1.08 M Na2SO3 (sodium sulfite) solution. The ionization constants for sulfurous acid are Ka1 = 1.4× 10-2 and Ka2 = 6.3× 10-8.
What is the pH of a buffer solution made with 20 g of acetic acid and 30 g of sodium acetate in 450 mL of water? (Ka = 1.8 x 10-5). If concentrated HCl is added, will the pH increase or decrease?
What are the metric and American engineering units of the diffusion constant?
What is the molality of a solution formed by dissolving 1.70 mol of KCl in 15.0 mol of water (MM of water = 18.02 g/mol),
calculate the molality of a solution prepared by dissolving 19.9 grams of KCl in 750.0 mL of water
A normal value for blood cholesterol is 200mg/dl of blood. If a normal adult has a total blood volume of 5 L, how much total cholesterol is present.
The decomposition of potassium chlorate yields oxygen gas. If the yield is 95%, how many grams of KClO3 are needed to produce 10.0L of O2 2KClO3(s) -> KCl(s) + 3O2(g)
Aluminum metal dissolved in hydrochloric acid as follows: 2Al(s) + 6HCl(aq) → 2AlCl3(aq) + 3H2(g)
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