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Caffeine is basic. Show the reaction of caffeine with aqueous hydrochloric acid to give caffeine hydrochloride. (reaction is at the tertiary amine nitrogen, not the amide ones). Show all mechanism arrows
Four wavelengths of light are each quantized to excite electrons of a given atom to a particular higher energy shell. Assign wavelengths of 496nm, 356nm, 701nm, and 591nm
Why does MgCo3 dissolve in water and not in alcohol. Why does Baking Soad dissolve in water. Why does Baking Soda disslove in alcohol. How do you tell the difference beteewn MgCO3 and sugar using thir different solubility to alcohol and water.
65.50 ml of 0.161 m hf is titrated with 0.1200 m naoh. what is thenbsp ph after 65.50 ml of base have been added? ka
How many milliliters of ammonium sulfate solution having a concentration of 0.411 M are needed to react completely with 61.4 mL of 1.24 M sodium hydroxide solution. The net ionic equation for the reaction is
Determine the amount of energy or work that the silicon nitride tip could absorb before being plastically deformed, assuming no initial cracks. Volume is in part A.
question a mixture of 8.7 g ch4 3.6 g helium and 6.3 g nitrogen is placed in a container and the total pressure is
After mixing 500mg of XI3 with sufficient Cl2, 236mg of XCl3 are obtained. This represents 100% yield of that reaction. Determine the identity of element X.
Consider the neutral form of the amino acid histidine a) When the neutral form of the amino acid histidine (HA) is titrated with HClO4, write the sequence of reactions that occur. Draw structures of reactants and products.
53.5 g of an ideal gas of molecular weight = 30.5 g/mol are confined at a pressure of 133 mmHg. The density of the gas is 0.228 g/L. Compute the temperature of the gas in degrees Celsius.
Write the structural formula for the product that forms when 1-methylcyclopentene reacts with Br2 in H2O
a balloon is filled to a volume of 7.00x102 ml at a temperature of 20.0 degrees c. the balloon is then cooled at
A nitric acid solution containing 71.0% HN)3 (by mass) has a density of 1.42 g/mL. How many moles of HNO3 are present in 1.00L of this solution?
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