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The amount of carbon-14 in ancient artifacts and fossils is often used to establish their age. Determine the number of protons and neutrons in a carbon-14 isotope and write its symbol in the form
No desiccator is available. the sodium carbonate is cooled to room temperature, but the humidity in the room is high. how will this affect the reported molar concentration of the hydrochloric acid solution. Will it be too high, too low, or unaffec..
to what pressure should you fill the acetylene tank to ensure that you run out of each gas at the same time? Assume ideal behavior for all gases.
for the reaction 2a b --gt 2c if b is initially 4.0m and 2min later is 3.0m what is the rate of appearance of
What is the percent ionization of a 0.186 M solution of this acid? A certain weak base has a Kb of 7.50 × 10-7. What concentration of this base will produce a pH of 10.06?
what is the difference between the ideal pressure (as predicted by the ideal gas law) and the real pressure (as predicted by the van der Waals equation)?
What mass of carbon dioxide is produced by the complete combustion of 5.50 grams of hexane, C6H14
Compare the molar enthalpies of neutralization of hydrochloric acid, sulfuric acid, and phosphoric acid. Discuss the similarities of these data.
a helium-filled balloon has a volume of 2.75 l at 17 c. the volume of the balloon decreases to 2.36 l after it is
a 52kg person is standing on a bathroom scale in an elevator moving upward. a if the scale reads 58kg what is the
How much dry solute would you take to prepare each of the following solutions from the dry solute and the solvent
What will be the final temperature of a 15.0g sample of water that is heated with the addition of 4.2kJ at 18 0C
How many grams of urea must be added to 88 milliliters of water in order to obtain a solution with a mole fraction of 0.012 in urea
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