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In a laboratory 6.80g of Sr(NO3)2 is dissolved in enough water to form 0.450L of solution. A 0.120L sample is withdrawn from this stock solution as well as titrated with a 0.0300M solution of Na2CrO4.
Explain what volume of Na2CrO4 solution is needed to precipitate all the Sr+2(aq) as SrCrO4?
Assume that O2(g) and H20(g) can be described by the van der Waals equation of state. Decide which between 1 mole of O2 and H20 has the highest pressure at the same value of T and V
when 50.0 mL of 0.5M NaCl solution is combined with 100.0mL of 0.20M Na2SO4 solution, what is the concentration of sodium ions in the final solution.
Under what conditions can an electron be boosted to a higher energy level, i.e. to an electron shell further from the nucleus. What could happen to this excited electron
Calculate the acid dissociation constant Ka, for the ammonium ion (NH^4+); Kb for NH3 is 1.8 x 10^-5
A sample of commercial hydrogen peroxide solution was analyzed using the procedure in this experiment. the results from three determinations were 3.03% ,2.89% and 3.22%
Propose a reasonable reaction mechanism for the sodium hypochlorite oxidation of 3-heptanol. Give the IUPAC name of the expected product
Laboratory experiment produces volatile compound in gaseous form. You need to collect this sample by adding just enough cryogen (cooling agent) into a rigid vessel to condense your compound as liquid
Balance the following equation in acid solution and determine if it is spontaneous when all ion concentrations are 0.010 M and the gas pressure is 1 atm. NO3¹? (aq) + Sn²? (aq) ? NO(g) +Sn4? (aq)
how many milliliters of concentrated hydrochloric acid solution 36.0 hcl by mass density 1.18 gmol are required to
The reaction the question refers to is the reaction between salicylic acid and acetic anhydride, which is catalyzed by sulfuric acid and produces aspirin and acetic acid.
What is the area of the circuit element in cm^2? Write your answer in scientific notation. Round your answer to 3significant digits.
Solve an equilibrium problem (using an ICE table) to calculate the pH 1)a solution that is 0.13M in NH3 and 0.15M in NH4Cl 2) 185.0 mL of 0.12M C2H5NH2 with 265 mL of 0.20M C2H5NH3Cl
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