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Draw the Lewis structure for H2SeO3 from the skeletal template structure below. If the valence shells are filled to the usual limit (maximum of 8), how many non-bonding valence electrons are there in the molecule?
An aqueous solution contains 167 g CuSO4 in 820 mL of solution. Calculate the : a. Molarity b. Percent by mass c. Mole fraction d. Molality of the solution, The density of the solution is 1.195 g/mL
Use heat of formation data to determine H for the combustion of hydrogen sulfide according to the following reaction: 2 H2S(g) + 3 O2(g) ? 2 SO2(g) + 2 H2O(?) ?H = ? ?Hfo for compounds:
10 ml of a silver nitrate solution is titrated to the equivalence point with 8.5 ml of a .1100 M HCL solution. What is the concentration of the silver nitrate?
How much potassium oxalate can be added to 158.0 mL of 0.35 M [Cu(NH3)4]Cl2 before a precipitate of CuC2O4 begins to form?
Draw the structures of and label as the major and minor dehydrohalogenation products of reaction between 2-bromo-2-methylbutane with sodium ethoxide in ethanol.
Problem- Explain with an appropriate diagram why amphipathic molecules tend to form micelles in water. What force drives micelle formation
Show how to synthesize 2-methyl-2-pentene from an alkyl halide and an aldehyde or ketone, plus any other necessary reagents. Then show the reagents necessary to convert butyraldehyde into the following. There may be one more step
If there is a phasechange you need to then write a net ionic equation and list the spectator ions barium chloride plus silver nitrate equals barium nitrate plus silver chloride
Problem- Calculate the pH of a solution of a weak acid HA, which has a 0.128 M HA and 0.300 M [A-] if Ka is 0.0000274
A 36.3 mL aliquot of 0.0529 M (aq) is to be titrated with 0.0411 M NaOH (aq). What volume (mL) of base will it take to reach the equivalence point?
a 5.0 l bulb filled with 175 torr of he and a 7.5 ml bulb filled with 325 torr of kr are connected together allowing
P4(s) + 6F2(g) --> 4PF3(g) How many grams of fluorine are needed to react with 6.20g of phosphorus?
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