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Compare and contrast the accuracy and precision of at least three types of measurements used in your life
Tetraboric acid, H2B4)7, is prepared by heating boric acid,H3BO#(condensation reaction). If 400.0 mmolo H3BO3 are used, what mass(g) of h20 is formed, assuming quantitative stoichiometric conversion
How does the energy of two photons corresponding to a wavelength of 451 nm (blue light) compare with the energy of three photons corresponding to a wavelength of 704 nm (red light)?
2NO2 + Cl2 = 2NOCl The inital pressure of NO2 was 1.577 atm and the inital pressure of Cl2 was 0.427 atm. At equilibrium, the partial pressure of NOCl is 0.624 atm. Calculate K.
find out which of the given is a saturated hydrocarbon a ch2ch-chch2 b ch3-ch2-cch cch3-ch2-ch2-ch3 dch3-chch-ch3 also
Nitrogen gas when combined with hydrogen gas forms ammonia gas according to the following equation N2(g)+3H2(g)->2NH3(g) deltaHrxn=-56 kJ.
Compute the number of grams of H 2 SO 4 in 1 gallon of battery acid if the solution is 38.9% sulfuric acid by mass and has a density of 1.33g/mL ?
A standard oxalic acid solution is 0.065 M. It was prepared by dissolving H2C2O4*2H2O in distilled water.
A child has a dangerous blood lead level of 120ug/100mL. If the child is administered 100 mL of 0.10M Na2 Ca(EDTA), assuming the exchange reaction
2.10 L of a buffer solution that is 0.360 M in NH3 and 0.430 M in NH4Cl are diluted to 4.30 L with distilled water. What is the pH of the buffer? Kb of NH3 = 1.8 10-5.
Write an equation for any reaction that occurs after each step and calculate the concentration of Ba,CL,NO3,NH4 in the final solution assuming that all reaction go to completion
Compute the number of gms of CoCl2 that would be needed to prepare the solutions:(a) 550 mL of a 1.75 M solution (b) 210 mL of a 0.0180 M solution.
Assume the total heat capacity of the air C air=30 J/K. Describe what's the likely ice will ne after the system reaches equilibrium. b) Estimate theliekly final temperature after reaching equilibrium
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