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Predict the acid/base/neutral properties of 1.00 M solutions of, respectively, KH2AsO4 and K2HAsO4.
Calculate the pH of the solution after 10.0, 20.0, and 30.0 mL of acid have been added; pKb of (CH3)3N=4.19 at 25 degrees C
A student mixes 175.0 grams of water at 62.31oC in a coffee-cup calorimeter with 175.0 grams of water at 25.84oC. The final temperature of the mixture is 41.71oC.
Calculate the work done in joules, when 4.5 L of argon expands to 11 L at constant temperature against an external pressure 545 torr.
Combustion analysis of toluene, a common organic solvent, gives 4.12mg of {\rm{CO}}_2 and 0.959mg of {\rm{H}}_2 {\rm{O}}. If the compound contains only carbon and hydrogen, what is its empirical formula
Label the anode, cathode and direction of e- flow an write the half reaction equation for each electrode
How can ethidium ions cause mutations in DNA and what type of interactions exists between the DNA and ethidium ions?
ou have the following supplies: 2.00L of 1.00M KH2PO4 stock solution, 1.50L of 1.00M K2HPO4 stock solution, and a carboy of pure distilled H2O . How much 1.00M KH2PO4 will you need to make this solution?
how many grams of solid NaOCl must be added to 50 mL of .14 molar HOCl to obtain a buffer solution with a pH of 7.49.
Assume you carry out an experiment when the atmospheric pressure is 765mmHg and the temp in 24 degrees C. you collect Hydrogen gas and want to know the pressure of the gas
What is the magnitude of the electric field amplitude associated with the beam and the corresponding photon density per cm3?
An organic compound has a molecular weight of 176.12 amu and was found to contain only three elements, C, H and O. When a 1.0000 g sample was completely combusted in air
In the Virtual ChemLab experiment "Electronic State Energy Levels," what gaseous element is used in fluorescent light tubes?
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