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determine the molarity of the solution that is prepared as follows: 73.0 g of magnesium of nitrate is dissolved in enough water to make 550.0mL of solution. molarity
Draw a mechanism to demonstrate how pyridine catalyzes the hydrolysis of acetic anhydride to two molecule of acetic acid. Is this reaction reversible? why or why not?
When do you expect to see signal distortions in 1H-NMR spectrums? What kind of distortions can occur? How can you minimize the appearance of distortions
Using a flow diagram, show the separation of a mixture containing p-bromoacetanilide, N-cyclopentyl-N-methyl-N-propylamine (N mean the group is attached to the nitrogen of the amine and m-nitrophenol. Specify the organic solvent and aqueous soluti..
Calculate the amount (in grams) of N-methylmaleimide and 9-(hydroxymethyl)anthracene that are required in a reaction utilizing 0.5mmol 9-(hydroxymethyl)anthracene (208.26 g/mol) and 3 molar equivalents of N-methylmaleimide (111 g/mol)
How many moles of (NH4)3PO4 are present in 100.0 mL of 2.50 M (NH4)3PO4?
Not wanting to waste the expensive sample, you decided to measure the pH of the solution and determined it to be 1.85. What was the concentration of the orginal acid sample? (Hint: it is a monoprotic acid)
State the number of grams of water that can be obtained by the reaction
Silver chloride, often used in silver plating, contains 75.27% Ag.Calculate the mass of silver chloride in grams required to make 4.4 grams of silver plating.
A buffer is formed by mixing 100 mL of 0.1 M NH4Cl with 50 mL of 0.3 M NH3. To this solution 12 mL of 0.1 M NaOH is added. What is the approximate pH of the new solution after neutralization? Assume a Kb of 1.8 × 10^-5 for the weak base.
A mixture of three gases has a total pressure of 1380 mm Hg at 25 oC. If the mixture contained 56 grams CO2, 3.04 mol CO and 9.03 X 1023 atoms of argon, the partial pressure of argon would be about
Assume that a particular reaction evolves 241 {rm kJ} of heat and that 33 {rm kJ} of PV work is gained by the system.
Cars were timed by police radar as they passed in both directions below a bridge. Their velocities (kilometres per hour, numbers of cars in parentheses) to the east and west were as follows
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