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You are asked to prepare a buffer with a pH of 4.04. calculate the volumes of 1.00M solutions of formic acid (HCOOH) and sodium formate (NaHCOO) needed to produce 200mL of the buffer
Florine is so reactive that it forms compound with material insert to other treatment when 0.448gm of plantinum is heated in florine, 0.71gm of dark red, volatile solid forms. What is emperical formula
Suppose you inserted a piece of an unknown metal into a solution of zinc (II) nitrate and observed no reaction. Then if you inserted the unknown piece of the metal into the solution of iron (III) chloride a deposit formed on the bottom of the well..
What is the approximate thermal energy in kJ/mol of molecules at 0° C? Express your answer to the nearest 0.1 kJ/mol
At 5 oC the equilibrium constant for the reaction: 2 HBr(g) H2(g) + Br2(g) is KP = 2.80e-16. If the initial pressure of HBr is 0.00991 atm, what are the equilibrium partial pressures of HBr, H2, and Br2? p(HBr) = . p(H2) = . p(Br2) =
calculate deltag for this reaction under the following conditions assume an uncertainty of 1 in all quantities
determine the ph of 0.25 m hno2 nitrous acid solution it is given that ka4.5 x 10-4?determine the molecular formula of
A piece of galena has a volume of 3.9 cm3. If the density of galena is 7.5 g/cm3, what is the mass (in kg) of that piece of galena?
A 20 degrees Celsius, the solubility of potassium nitrate is 30g in 100g of water. A 35 gram solution of potassium nitrate in water was determined to contain 10 grams of KNO3.
At equilibrium 1.97e-02 mol of NOCl is found in the reaction mixture. Calculate the equilibrium pressures of all gases in the reaction vessel and the value of KP for the reaction. Pick the correct statement from the multiple choices. Use the value..
a furniture factory needs 36.5 ft2 of fabric to upholster on a chair. its dutch supplier sends the fabric in bolts of
The osmotic pressure of 0.010M solutions of a non-voliatile electrolyte solure "a" and a non-volitale non-electrolyte solute "b" are 0.605 atm and 0.235 atm respectively
one of the components of pineapple flavor is ethyl butyrate which has the empirical formula c3h6ox. its vapor took 162
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