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Suppose the original sample is unknowingly contaminated with a second anhydrous salt. Will the reported percent water in the hydrated salt be too high too low or unaffected by its presence? explain
if anbsp nonvolatile yellow crystalline solid sample of 0.351 g is dissolved in benzene c6h6 of 15.8 g formed a
the radioactive isotope carbon-14 is used for radiocarbon dating. The half-life of carbon-14 is 5730 years. A wooden artifact in a museum has a 14C count that is 0.125 times that found in living organisms. Estimate the age of the artifact.
Calcium chloride is added to a polymer solution of sodium alginate to cross-link the polymers, reating a thicker mixture which is used to add texture of food (like milk shakes). What is the explanation for why this happens?
A 0.411g sample of powdered copper mixed with an inert, soluble additive was fully consumed by 23.4ml of 0.602M nitric acid, producing copper(II) nitrate, water and nitric oxide (NO) gas. What was the percent copper (by mass) in the sample
Calculate the number of chromium atoms in a 2.0 cm by 1.0 cm by 7.0 cm piece of this stainless steel. Calculate the number of 52Cr atoms in the above sample. The natural abundance of 52Cr is 83.789%.
a tank at is filled with of carbon dioxide gas and of carbon monoxide gas. you can assume both gases behave as ideal
Consider a solution containing 4.95 mM of an analyte, X, and 1.79 mM of a standard, S. Upon chromatographic separation of the solution peak areas for X and S are 3569 and 10981, respectively. Determine the response factor for X relative to S.
KHP is an acid with one acidic hydrogen and a molar mass of 204.22 g/mol. In the titration, 20.46 mL of the sodium hydroxide solution was required to react with 0.1082 g KHP. Calculate the molarity of the sodium hydroxide.
if 31.82 g of a metal oxide reacted with excess carbon and 4.08 l of co2 formed at 100 c and 1.5 atm what is the
Because of its semiconducting properties, is sometimes used in electronic devices. The band gap energy for is 2.40 . What is wavelength of a photon with this energy
What kind of intermolecular attractive forces would be present between the particles in the following substances
A 30.00 mL volume of a weak acid, HA, (Ka = 3.8 x 10^-6) is titrated with 39.00 mL of 0.0958 M NaOH to the equivalence point. What is the pH of the analyte solution before any base is added to it
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