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An unknown compound B has the melting point 112.5-114 degrees C. It is suspected that B is either X or A, each compound having reported mps of 115degreesC. Assuming B is X, indicate the mp range (give actual values) for the Melting points
a) B and X
b) B and A
Classify each of the following binary compounds by the oxidation number of hydrogen. NH3 CaH2 MgH2 H2O HCl NaH H2 CH4
A 23.7-g sample of ethylene glycol, a car radiator coolant, loses 906 J of heat. What was the initial temperature of the ethylene glycol if the final temperature is 32.5 degrees Celsius (c of ethylene glycol=2.42 J/g*K)
Write the eqn for each large-extent B/L A/B rxn which occurred on making this mixture. Do this by starting with the rxn that involves the strongest B/L A with the strongest B/L B. Label this rxn (i). Continue writing eqns in this "strength order" ..
Draw the product of the following reactions and indicate whether the product would be (R), (S), racemic, or achiral. You do not have to draw a projection that shows the configuration; you can just use the label
A solution of sodium chloride in water has a vapor pressure of 20.3 torr at 25°C. What is the mole fraction of NaCl in this solution?
Borazine has the formula (BHNH)3. The combination of a boron atom and a nitrogen atom is isoelectronic with two carbon atoms. How would you draw the stucture of borazine?
Draw every stereoisomer for 1,2-difluoro-1,2-dimethylcyclopentane. Use wedge-and-dash bonds for the substituent groups, and be sure that they are drawn on the outside of the ring,
How do you predict the formulas for ionic compounds using the electron dot structures?
what volume of bleach (6%w/v=6g/100ml) would be required to oxidize 5.0 mL of methanol (density 0.890 g/ml) to methanone?
Calculate the percent nickel in a compound for which a 11.6 mg sample required 1.38 mL of 0.010 M EDTA to reach the Murexide endpoint.
Calculate the mass of ferrous ammonium sulfate you would need to add to a 100.00 mL volumetric flask to make a solution that is 59 ppm in Fe. Then, stock solution A is prepared by dissolving 183.5 mg of ferrous ammonium sulfate in water and diluti..
If 5.36 103 kg each of NH3, O2, and CH4 are reacted, what mass of HCN and of H2O will be produced, assuming 100% yield?
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