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Suppose that 1.252 g of impure barium hydroxide is dissolved in enough water to pro- duce 213.4 mL of solution and that 64.3 mL of this solution is titrated to the stoichiometric point with 29.5 mL of 0.0318 M HCl(aq). What is the percentage purity of the original sample?
a 20-g mass of argon occupies 15.0 l at a pressure of 25 kpa . find the volume of the argon when the pressure is
Write a balanced chemical reaction for the double replacement between aqueous aluminum nitrate and sodium phosphate. which product will be the precipitate
The osmotic pressure of blood at normal body temp of 37 deg C is 7.65 atm. Sometimes it is necessary to add a saline (NaCl) solution by intravenous injection to a patient in the ER.
The nitrite ion (NO2-) is commonly determined by a colormetric procedure using a reaction called the Griess reaction. Im this reaction the sample containing nitrate is reacted with sulfanilimide
What is the molality of the 45.0 mass % ethylene glycol (C2H6O2) solution in the water
Calculate the molarity of a solution made by adding 44.4 mL of concentrated ammonia (28% by mass, density 0.880 g/mL) to some water to some water in a volumetric flask
Estimate the mass of water that must evaporate from the skin to cool the body by 0.50^circ C. Assume a body mass of 85 kg and assume that the specific heat capacity of the body is 4.0 {rm{J}}/{rm{g}}; cdot ;^circ {rm{C}}.
explain why there is a difference in spectrophotometric response during titration before and after the equivalence point by placing the statements below into the appropriate categories.Now, calculate the concentration of apotransferrin present in ..
1.30 grams of ammonium nitrate is combined with 74.0 grams of h2o in a coffee-cup calorimeter nbspat an initial
Reaction: 2NO(g)+2H2(g)=>N2(g)+2H2O(g) Calculate the equilibirum concentration of all the gases( in class my instructor said that a method called the ICE table is useful. do you know how to do that?). b) calculate the numerical value of Kc.
This reaction is a catalytic hydrogenation that only partially reduces an alkyne. Consider whether the hydrogenation
If Qp = 1.2 1020 and PO2 = 0.318 and PN2 0.812, what is the partial pressure of NO?
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