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Calculate the energy of a mole of photon with wavelength of (a) 200nm (ultraviolet), (b) 150pm(X ray), and (c)1.00cm (microwave).
Write the two chemical equations that show the titration reactions of the carboxylic acid group and the amino group of glyclyglycine
how many mL of 1.00 M hydrochloric acid is needed to prepare a 100.0 mL solution of hydrochloric acid with pH = 5.0 that also contains 0.01667 M MgCl2?
What is the gas pressure (in atm) inside a 1.89-L bulb that contains 1.56-g of Ne at a temperature of 21.1 C? Be sure to report the units as atm
What is the Total Ionic Equation for:2Al + 2KOH + 6H2O = 2KAl(OH)4 +3H2
What is the stoichiometric coefficient for aluminum when the chemical equation is balanced using the lowest, whole-number stoichiometric coefficients?
C2H5OH(aq)+2Cr2O7^2-(aq)+16H+(aq)---> 2CO2(g)+4Cr^3+(aq)+11H2O(l) What is the blood alcohol level in mass percent if 8.26mL of 0.04988 M K2Cr2O7 is required for titration of a 10.005g sample of blood?
liquid NCl3 in a 2.50L closed container is heated until it decomposes completely to gaseous products. the resulting mixture exerts a pressure of 745mm Hg at 95 degrees celsius
The standard free energy of activation of a reaction A is 89.0 kJ mol-1 (21.3 kcal mol-1) at 298 K. Reaction B is ten million times faster than reaction A at the same temperature
Electromagnetic radiation with a wavelength of 665 nm appears as orange light to the human eye. The energy of one photon of this light
What is the C2O42- concentration in a solution that is 0.10 M in oxalic acid and 1.0 M in HCl? (Consider that the oxalic acid concentration at equilibrium for this common ion problem is 0.10 M.)
If 0.7438 g of potassium hydrogen phthalate is used and the equivalence point occurs at 33.00 mL of NaOH, calculate the molarity of the NaOH solution to the correct number of significant figures.
What is the osmotic pressure of a solution made from dissolving 30.0 g of glucose, C6H12O6, in 700 mL of water at 21.0C
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