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Problem- What is the pH of the solution which results from mixing 35 mL of 0.50M NH3 and 35 mL of 0.50M HCl? (Kb for NH3=1.8E-5)
State your answer by means of two significant figures.
A layer of peat beneath the glacial sediments of the last ice age has a carbon-14/carbon-12 ratio that is 21.4% of that found in living organisms. How long ago was this ice age
A 0.1225-g sample of solid magnesium is burned in a bomb calorimeter that has a heat capacity of 1769 J/° C. The calorimeter contains exactly 261 g of water, and the temperature increases by 1.126°C. Calculate the heat given off by the burning Mg,..
Regard as the chemical reactions taking place during the electrolysis experiment, explain which observations should you expect to see
Will a lower temperature chemical reaction be expected to give an absorbance/time plot with a slope that is more shallow or steeper that is closer to or further from the horizon than one that is at a higher temperature?
Explain how you would determine if a) CO2 is liquid, vapor or vapor-liquid at a particular T & p. b) CO2-water is liquid, vapor-liquid, vapor, or liquid-liquid at a particular T, p and z.
Acyl chloride can hydrolyze in water spontaneously to carboxylic acid. In the interfacial polymerization water is used as one of the solvent, why you don't have to worry about the hydrolysis of sebacoyl chloride in this action
Calculate the cell potential (emf) for a galvanic cell at 298 K composed of a standard aluminum electrode (Al metal and Al 3+ ions at 1.0 M) and a standard cadmium electrode (Cd metal and Cd 2+ ions at 1.0 M.)
The freezing point depression of water is a rather small 1.86 deg C kg/mol. Addition of 0.454g of zinc chloride to 3.33g of water lowers the melting point by 5.2 deg C. Calculate the expected melting point for this mixture and account for any diff..
What is the voltage of the cell: silver-silver chloride electrode || saturated calomel electrode given that the potential for the Ag|AgCl electrode in a saturated KCl
which gas has particles with the slowest average speed at 28 C? 1- Carbon dioxide 2- Sulfur trixoide 3- Sulfur hexafoluride 4- Hydrogen choride 5- Helium
The iridium is plated out from the solution onto a boron doped diamond electrode at constant potential. The initial mass of the electrode before plating was 7.4938 g
Calculate the mass of propylene glycol that must be added to 0.500 kg of water to reduce the vapor pressure by 4.60 torr at 40 degrees celcius.
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