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When a nitrite containing sample with a mass of 3.000 g was analyzed, 16.65 mL of 0.1500 M Na2S2O3 solution was required to completely titrate the sample. What is the mass percent of NO2- ion in the sample? How would you go about solving this problem?
why would a direct measurement of the heat of decomposition of sodiium hydrogen carbonate be impossible usig a coffee cup calorimeter.
Find the predicted value for an unmeasured point for: Grahams law, find the rate for butane, C4H10
The change in enthalpy Delta H for a reaction is -39.6 kJ/mol. The equilibrium constant for the reaction is 4.4×103 at 298 K.What is the equilibrium constant for the reaction at 635 K?
How many grams of precipitate are formed if 0.27 grams of barium nitrate is mixed with 0.2 L of 0.8 M potassium carbonate?
How many milliliters of 5.40 M H2SO4 are required to react with 4.00 g of solid containing 50.0 wt% Ba(NO3)2 if the reaction is as shown?
What is the ratio of the initial rate to the rate at 50% completion?(b) In reaction 2, the initial [NO] is twice the initial [O3]. What is the ratio of the initial rate to the rate at 50% completion
A new soft drink on the market is prominently labeled as "caffeine-free". Based on the nature of complaints filed by several consumers, it appears that the "caffeine-free" claim might actually be fraudulent.
Use the systematic treatment of equilibrium to determine the pH and concentrations of species in 1.00 L of solution contatining 0.070 lysine HL 0.055 mol aspartic acid H2A and 0.0080 mol NaOH. Consider just acid base chemistry. Ignore ion pairing ..
A 32.0-g sample of water at 290. K is mixed with 51.0 g water at 340. K. Calculate the final temperature of the mixture assuming no heat loss to the surroundings.
A cylindrical glass tube 15.0 cm in liength is filled with ethanol. The mass of ethanol needed to fill the tube is found to be 9.64g.
Which solution will have the lowest boiling point?
Calculate the standard enthalpy of formation of solid diboron trioxide (B2O3) using the following thermochemical information
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