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Problem- An archeologist on a dig finds a fragment of an ancient basket woven from grass. Later, it is determined that the carbon-14 content of the grass in the basket is 9.09% that of an equal carbon sample from present-day grass. What is the age of the basket?
Please answer only if you are 100% confident
Presume a student used 1.0mL of 2-methylcyclohexanol and 2mL of phosphoric acid in a dehydration reaction. After purification of the reaction product, 0.484 g of a mixture of alkenes was isolated. Explain what is the percentage yield of the dehy..
what will be the theoretical yield of bromobenzene in given reaction as C6H6 + Br2 → C6H5Br + HBr also find out percentage yield when actual yield of bromobenzene was found 56.7 g?
describe three distinctly different reactions of furan which confirm the relatively smaller aromatic resonance stabilization of furan compared with thiophene and pyrrole (reactions which lead to non aromatic products)
One hundred fifty kmol of an aqueous phosphoric acid solution contains 5.00 mole % H3PO4. The solution is concentrated by adding pure phosphoric acid at a rate of 20.0 L/min
The flask was filled to the calibration mark with water, and the contents were thoroughly mixed. What were the equilibrium concentrations of H+, Na+, H2PO-4 , and HPO-2 in the resultant solution? Ka1 = 7.1x10-3, Ka2 = 6.3x10-8, and Ka3 = 4.2x10-13..
For the reaction A + B C, the rate constant at 215 degrees C is 5.0 X 10^-3 and the rate constant at 452 degrees C is 1.2 X 10^-1 a) What is the activation energy in kJ/mol?
Question- Note the electronic structure of Cadmium (II) and indicate the group (type A, borderline, or type b) in which it should be placed. Predict the principal inorganic forms of the element in fresh and sea water under both oxidizing and reduc..
Calculate Keq for 3 moles of electron(s) in each half-reaction and a standard potential of 0.47 V.
Explain is the maximum amount in moles of NH3 that can be produced by the reaction of 2.5 moles of N2 with 3 moles of H2 via the equaton below.
What is the electron-pushing mechanism for the aldol condensation reaction of benzaldehyde and acetone forming dibenzalacetone
A water sample contains 118mg/L of bicarbonate ion, 19mg/L of carbonate ion, and has a pH of 9.5. What is the alkalinity of this water expressed as mg/L of CaCO3? Answer: 130mg/L as CaCO3.
What are the subscripts in the empirical formula of this compound?
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