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What is the effect of adding base to an aqueous solution of ammonia? 1-PH of the solution will increase 2-the conc. of NH4 will decrease 3-the conc. of NH3 will increase
A rare gold coin (24 karat, or 100% gold) has a mass of 25.54 g. How many atoms of gold are present in this coin
A student wanted to determine the molar concentration of acetic acid in a commercial vinegar sample. He used a volumetric pipet to deliver 3.00 mL of vinegar to an Erlenmeyer flask, added about 30 mL of water and 3 drops of phenolphthalein indicat..
Identify the reaction as precipitation, acid-base, oxidation-reduction and/or gas forming. What is the concentration of the unknown solution
Given that O2 is parmagnetic and has a bond order of 2, and its highest occupied molecular orbital is antibonding, what would be the expected bond orders for O2 2- and O2 2+?
Some of the cyclohexane solvent vaporized during the temperature versus time measurements. Will this loss of cyclohexane result in the freezing point of the solution being recorded as too high
ultramarine ultramarine is a deep blue color and a pigment which was originally made by grinding lapis lazuli into a
Pressure of 0.923 atm is allowed to expand at constant temperature until its pressure reaches 0.377 atm. What is its final volume?
List all compounds that are present when reaction is complete. C) Determine the theoretical yield of H3PO4 based on the starting materials and D) Determine the mass, in grams, of each compound present when the reaction is complete
calculate keq for 1 moles of electrons in each half-reaction and a standard potential of 0.38 v. a half-cell that
how many moles of zinc were oxidized. by how many grams did the mass of of the zinc electrode change during this process
consider the following three equilibria occurring simultaneously in solutioncaaq c2o4aq cac2o4sh2c2o4aq haq
stable globular units unit of tertiary structure clusters of secondary structure may be distinct functional units of a protein Both: depends on primary structure depends on hydrophobic interactions may retain a 3d structure when seperated from ent..
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