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What is the ratio of C-14 in a wooden object made in 100 BC to the one made of the same kind of wood in 700 BC? Half life of carbon-14 is 5730 years.
A 144-mL portion of that solution is diluted by adding 169 mL of water. What is the final concentration? Assume the volumes are additive.
What is the percent yield of ammonia when 150.0 g of nitrogen reacts with 32.1 g of hydrogen if the actual yield is 174 grams?
the mass propotion of Mg:N=18:7. if 3.60 g reacts with 4.20 g N2 gas so the mass of product Mg3N2 is?
An oxygen molecule is adsorbed onto a small patch of the surface of a catalyst. It's known that the molecule is adsorbed on 1 of 36 possible sites for adsorption
What is the partial pressure of ethane P ethane , in the flask? Express your answer to three significant figures and include the appropriate units
The bond energies are: C H 416 kJ/mol; C C 356 kJ/mol; C C 598 kJ/mol; O O 498 kJ/mol; C O 803 kJ/mol; H O 467 kJ/mol.determine the heat of combustion of ethylene ?
what will be the equilibrium concentration of CO.
If you have an alcohol, and use a Dess-Martin oxidation reaction, what happens to the H+ on the alcohol, and what happens to the acetate? Please show the mechanism.
The nuclide Pb-210 undergoes three successive decays (beta, alpha, and beta, respectively) to form a stable nuclide. What are the three nuclides which form from Pb-210 in this decay series
what is the mole fraction of ethanol, C2H5OH, in an aqueous solution in which the ethanol concentration
To produce 225 moles of tetraphosphorus decoxide how many moles of oxygen are required?
Mass of Carbonates Needed to Raise Solution pH One Unit, An actual lab titration of a mildly acidic process water at a pH of 4.0 requires 0.9 grams/liter of Na2CO3 to raise the pH from 4.0 to 5.0; re-running the titration but this time using CaCO3..
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