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Describe two potential hazards when storing dangerous chemical and identify a proper method of preventing a harmful accident.
Concentrated sulfuric acid is used as a catalyst for the esterfication of acetic acid in the preparation of isopentyl acetate. Why is the sulfuric acid needed if another acid,
A solution of ethanol (C2H5OH) in water is prepared by dissolving 10.0mL ethanol (density is 0.79g/cc) in enough water to make 250.0mL of solution. What is the molarity of the ethanol solution?
Consider the distinction between evolution and natural selection. a) Under what circumstances can evolution occur in the absence of natural selection? Give two different examples, invoking different evolutionary forces in each.
Remember to label the diagram with the energy changes that occur. Your answer must include the potential energy diagram and a written description. (Note: you do not have to use actual energy values.)
You dissolved three salts in the previous lab: NaCl, CaCl2, and AlCl3-6H2O. Which of these three (on a per gram basis) will have the greatest impact on the freezing point when added to water
when benzene is treated with cyclohexene in the presence of a lewis acid catalyst such as aluminum chloride
Arrange the following in order of decreasing acidity. I. benzoic acid (C6H5CO2H) II. benzyl alcohol (C6H5CH2OH) III. phenol (C6H5OH)
The excess is titrated with standard 0.101 M KSCN solution, requiring 2.38 mL to reach the red Fe(SCN)2+ endpoint. Calculate the concentration of chloride in the brine in g/L
AgI is more soluble in ammonia than in pure water. Calculate molar solubility of AgI in 0.80 M NH3 solution. Ksp(AgI)=8.5*10^-17, Kf=1.6*10^7 for Ag(NH3)2.
If 20.8 ml of base is required to reach the equivalence point, what is the concentration of the acid?
What will be the volume of the gas sample if the pressure increases to 780 mm and the temperature increases to 35°C
If you were to place sodium in a solution of iron(II) chloride, would a spontaneous reaction occur? If the reaction is spontaneous, write both ½ reactions and the final net ionic reaction.
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