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Suppose you were given an unknown compound. Your task is to identify which compound it is using melting point data and measurements only. You are able to take as many melting points as you want and you have access to authentic compounds. Describe how you would carry out the identification.
Describe the differences in the shapes of the electron density distributions for NH3, NCl3, and PF3. Explain how the energy minimized bond angles
for a hydrohalogenatoin reaction if you use br is it calles hydrobromination? or if you use cl is it hydrochlorination?
Write a balanced chemical equation for the reaction of chlorine with thiosulfate ion, assuming an acidic solution.
A 4.10 g nugget of pure gold absorbed 287 J of heat. The initial temperature was 24.0°C. What was the final temperature?
If 0.884 gm of Ag was deposited on the spoon at a constant current of 18.5 mA, how many minutes did the electrolysis take
calculate the standard reduction potential of Joaquium. Write reaction in cell notation form.
Given a restriction enzyme that has a concentration of 50 units/ml but your experiment requires that the concentration be reduced to 2.5 units/ml.
If 12.5 g of iron(III) oxide (rust) are pro- duced from 8.74 g of iron, how much oxygen gas is needed for this reaction?
The vapour pressure of a liquid in the temperature range 200K to 260K was found to fit the expression: ln (P/Torr)=18.361-3036.8/(T/K) What s the enthalpy of vapourisation of the liquid?
The vapor pressure of water at 20oC is 17.5 mmHg. What is the vapor pressure of water (in mmHg) over a solution prepared from 258 g sucrose (C12H22O11) and 350 g water?
Benzene freezes at 5.45 oC. The Kf for benzene is - 5.07 oC/m. What would be the freezing point of a 0.210 m solution of octane in benzene?
a solid block of exactly 100.0 cm cubed has a mass of 153.6g. Determine its density.Will the block sink or float on water.
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