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An artifact classified as charcoal, found in a site at Kettlebury, UK, is found to have a 14C radioactivity of 9.46×10-2 counts per second per gram of carbon. If living carbon-containing objects have an activity of 0.255 counts per second per gram of carbon, estimate the age of the artifact?
The half-life of 14C is 5730 years.
Present a reaction mechanism for the sodium iodide in acetone test which explains the relative rate of reactivity of 1°, 2°, and 3° halides.
How do you determine which H atom is more acidic in a molecule?
a liter of solution contains .10 mol of Ag+ and .10 mol of Ba+2. if a highly concentrated solution of K2CrO4 is added drop by drop which will precipitate first. Ag2CrO4 or BaCrO4
What is the safest metal to use with a number of cleaning agents; even just H.2 0.; The heavier it is the better the resolve. A substance other then a metal with a comparable comparison would be nice. preferably something non corrosive.
A mixture of gases contains 3.41 g of NO2, 7.62 g of BF3, and 6.50 g of NO. If the total pressure of the mixture is 5.12 atm, what is the partial pressure of each component?
question the heat of vaporization of ccl2f2 is 289 jg.what mass of this substance must evaporate in order to freeze
Problem- Draw out a curved arrow electron pushing mechanism for oxone epoxidation when oxone reacted with acetone, trans-anethole, and solid pure NaHCO3. Also, please label the reactant and product. Thank you!
A voltaic cell is constructed that uses the following reaction and operates at 298 K. (Ered Ni+2 is -0.277) Zn(s) + Ni2+(aq) Zn2+(aq) + Ni(s) (a) What is the emf of this cell under standard conditions?
Question- Part 1- Suppose two compounds of known identity but with distinctive mass spectra cannot be resolved chromatographically. How could they be individually quantitated by MS as they co-elute from a column.
Calculate the volume of barium hydroxide (0.1177 M) necessary to react with 25.00 mL of phosphoric acid (0.1002 M)
Explain what happens to the heat produced by an exothermic reaction conducted in an adiabatic calorimeter
the likely intermediates in the mechanism and the expected isomeric products from the pathways of the mechnanism. Also please help to identify the major product attained.
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