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a 150 ml buffer solution containing 0.100 M hydrocyanic acid (HCN ka=6.2 x 10^-10) and .100 M soudium cyanide (NaCN) has 30.0 mL of .120 M KOH added to it. What is the pH of the solution after the KOH has been added?
The heat combustion of acetylene, C2H2(g), at 25°C, is -1299 kJ/mol. At this temperature, ?H°f values for CO2(g) and H2O(l) are -393 and -286 kJ/mol
This provides an estimate of the equilibrium concentration of gasoline in contact with the plastic. What percent of the gasoline in the initially full 2 gallon container is lost in a year
purpose a mechanism for the polymerization of methyl methacrylate in the presence of t-butyl proxybenzoate
Concentrated acetic acid is a Class II combustible liquid. What is the molecular weight of acetic acid that will form 2 moles of CO2 assuming complete combustion?
determine How many grams of AlCl 3 are formed if 30.0 grams of Hydrogen are produced? It is given that the molar mass of AlCl 3 =133.33 g/mol.
What mass of HCl is consumed by the reaction of 3.84 mol of magnesium? Answer in units of g.
If a contemporary wooden chair were somehow preserved to for the next 3,900 years, what C-14 dacay rate should be expected from the wood used to make the chair? (t1/2 = 5730)
Determine the limiting, excess reagent & percent yield of the reaction - How much excess reagent is left after the reaction reaches completion?
Show that you can selectively precipitate ONLY AgBr at a concentration of Ag of 5.5x10^-10 M in a solution that contains both Br- and CI- at a concentration of 0.02M.
how many milliliters of 0.100 m naohaq would be needed to completely neutralizenbsp 50.0 milliliters of 0.300 m
Discuss in detail the healthcare applications of chemical reactions. Which chemical reactions would you consider to be of importance to healthcare professionals? Why? In which situations are these chemical reactions useful to healthcare professiona..
How many grams of oxygen are collected in a reaction where 231 mL of oxygen gas is collected over water at a temperature of 25°C and a total pressure of 697 torr?
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