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The volume of a gas at 21?C and 0.33 atm is 63 mL. What volume will the same gas sample occupy at standard conditions? Answer in units of mL.
0.200 mol of NO is placed in a one liter flask at 2273K. After equilibrium is attained 0.0863 mol N2 and 0.0863 mol O2 are present. What is the Kc for this reaction
a polysaccharide of unknown structure was isolated subjected to exhaustive methylation and acid hydrolysed. analysis of
Explain a small empty glass bottle is found to weigh 6.820g. The container when filled with DI water at 20.00 degree Celsius weighs 32.628g. The density of water at 20.00 degree Celsius is 0.99821 g/mL.
Draw out the Lewis structures for H2CO3, HCO3-, and CO32-. Then determine the maximum number of equivalent resonance structures for each species. Note that carbon is the central atom in all three cases.
Predict the order for increasing binding energies of the C(1s) electron for the following compounds giving your reasoning.
Consider the titration of a 25.0 mL sample of 0.100 M acetic acid using 0.100 M NaOH as the titrant. The value of the equilibrium constant for HC2H3O is Ka= 1.8 x10^ -5. Calculate the pH of the acid solution before any NaOH has been added.
You begin an experiment with 0.20 M reactant A and 0.40 M reactant B. After the reaction has been allowed to achieve equilibrium, you have 0.10 M product C. What molarity of A do you have remaining at equilibrium
A student in a hurry decides to let the solvent travel only half way up the chromatographic paper in chromatogram 2. predict the effect of this procedural change on the resultion
Why is it impractical to measure cell potentials of solutions in which the Fe(II)/Fe(III) molality ratio is too small (or large)
an aqueous solution formed by dissolving 1.62 grams of anhydrous aluminium chloride in 50.0 grams of h2o has a freezing
Provide an example of an ionic compound (a salt) that would be slightly basic when dissolved in water. Define why and write the equilibrium reaction that produces OH-
1.compare and contrast covalentionic and hydrogen bonds.2. what information can you gather from the periodic table.3.
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