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A 0.5118g sample of CaCO3 is dissolved in a 12 M HCl and the resulting solution is diluted to 250.0mL in a volumetric flask.
How many moles of CaCO3 are used (formula mass=100.1)?
What is the molarity of the Ca²? in the 250mL solution?
How many moles of Ca²? are in a 25.00mL aliquot of the solution in 1b?
What is the pH of a solution that is 0.29 M in acetic acid, HC2H3O2, and 0.74 M in sodium acetate, NaC2H3O2, at 25°C? Ka of acetic acid is 1.8 × 10-5.
Is the skeleton of caffeine flat. How might the structure of caffeine account for the fact that it sublimes at atmospheric pressure instead of melting
This was allowed to react under reflux for an hour and then the products seperated. I wrote out a mechanism before lab and ended up predicting 4-chlorobenzoic acid and 4-chlorophenol as my final products.
An unknown compound degrades when exposed to sun light by first order kinetics. The half-life for this process is exactly 5.12 weeks. What is the rate constant
Find an example of a natural product or drug that has been prepared using a Diels-Alder reaction. Show the complete synthesis of the drug.
what controls the depth of the CCD the carbonate compensation depth?
Complete the following reactions and state the dominant mechanism where indicated 3-chloro - 2,2-dimethylbutane + NH3
German physicist Werner Heisenberg related the uncertainty of an object's position (?x) to the uncertainty in its velocity ?v. The mass of an electron is 9.11× 10-31 kg. What is the uncertainty in the position of an electron moving at 3.00 × 10^6 ..
What is the empirical and molecular formula of Acyclovir (MW 225).( C, 42.67%) - ( H, 4.92% )- (N, 31.10%)- (O, 21.31%)...........Weights: C=12.0; H=1.008; N=14.0; O=16.0
How many moles of OH were used to reach the end point? How many moles of H from HCl were used for back titration? How many moles of H from the solid were neutralized? What is the equivalent mass of the unknown acid?
Pancreatic lipases hydrolyze triacylglycerols (triglycerides) that have been emulsified by bile. Modify the triacylglycerol below to show the products of its hydrolysis
a 4 g sample of the hydrated crystal baoh2bull chih2o is heated until all the water is removed. the remaining solid
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