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What mass of NO2 can be produced by the complete reaction of 43.00 g of ammonia with 105.00 g of oxygen:4NH3 + 7O2--> 4NO2 + 6H2O
calculate the change in ph caused by adding 10.0 ml of 2.24-m hcl to 370. ml of each of the following solutions. awater
Calculate the amount of isopentyl acetate that should be present in the reaction mixture at equilibrium based on 300 mmol of acetic acid and 150 mmol of isopentyl alcohol as starting quantities. Use equilibrium constant of 4.2 for this calculation..
Calculate the moles and the mass of solute in 250.0 mL of 6.00 M NaOH.
A galvanic cell has an iron electrode in contact with 0.11 M FeSO4 and a copper electrode in contact with a CuSO4 solution.
A nugget of pure gold of 4.80 grams absorbed heat of 283 Joules. if the temperature was 23.0°C initially then determine what was the final temperature of the Au gold it is given that the specific heat of Au= 0.129 J/(g·°C).
before addition of any KOH b) after addition of 25.0 mL of KOH c) after addition of 35.0 mL of KOH d) after addition of 50.0 mL of KOH e) after addition of 60.0 mL of KOH
Working with partition function and entropy what is the ratio of the number of particles in the J= 14 to the J=4 level at a temperature of 1900 K?
Calculate the concentrations of the protonated and unprotonated forms of bromothymol blue in 100 mL of a pH 8.1 buffer solution to which 1.0 mL of a 0.005 M solution of bromothymol
What is the concentration of Ag+(aq) remaining in solution when the second metal iodide begins to precipitate from the solution? Ksp1(AgI)=1.5E-16 and Ksp2(PbI2)=1.4E-8
Calculate molar absorbancy of PAP if its diluted solution has an A280 =0.272.The cuvette's width is 1 cm.
Assume that you need to prepare 4-methyl-2-pentyne and discover that the only alkynes on hand are acetylene and propyne. You also have available methyl iodide, isopropyl bromide, and 1,1-dichloro-3-methylbutane.
Propane is often used for gas grills and is typically purchased by filling a propane tank with 20 pounds of propane. What is the enthalpy change when 18 pound of propane is burned?
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