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Problem- What does it mean when the absorption tails off at lower energy into the visible giving rise to its yellowish color?
I require expert help to solve the above question. Illustrate each and every step
You have a balloon that is not permeable to gas molecules. The balloon is spherical and has a circumference of 3.141592654 m when it is filled with a gas at 20 EC and 1.0000 atm pressure.
estimate the effective nuclear charge for an n1 n2 n3 electron in sulfur. show
calculate the standard reduction potential for the following couple. use electrons water and protons to balance the
Identify the charged groups in the peptide shown below at pH=1 and at pH=7. What is the net charge of this peptide at these two pH values? val-met-ser-Ile-phe-arg-cys-tyr-leu
A 16.0-mL sample of an unknown HClO4 solution requires titration with 25.5mL of 0.210M NaOH to reach the equivalence point. What is the concentration of the unknown HClO4 solution? The neutralization reaction
A gas mixture is made by combining 8.0g each of Ar, Ne, and an unknown diatomic gas. At STP, the mixture occupies a volume of 18.08L. What is the molar mass of the unknown gas
NH3 can react with BF3, forming NH3¾BF3. In this reaction, 1) NH3 acts as a Brønsted base, accepting a proton from the BF3 molecule. 2) NH3 acts as a Lewis base, donating a proton to the BF3 molecule
a gaseous mixture of o2 and n2 contains 30.8 nitrogen by mass. what is the partial pressure of oxygen in the mixture if
A gas occupies 10.0 L at 44.1 psi and 27 degrees C. What volume will it occupy at standard conditions
Calculate ?H, q and w when 1.00 mol of helium at 5.00L and a temperature of 298.15K is expanded and heated simultaneously
Estimate how many barrels of fluid this tank could hold. Clearly state any assumption you must make to determine this and explain how you arrived at your assumption
Given the following thermochemical equation: NO(g) + O3(g) ---> NO2(g) + O2(g) delta H= -198.9 KJ/mol O3(g) ----> 3/2 O2(g) delta H= -142.3 KJ/mol O2(g) ----> 2O(g) delta H= +495 KJ/mol determine the enthalpy change for the reaction: 2NO2(g) ---->..
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