Chemistry, 22.11.2019 08:31 RealGibbon857
Ahydrologist from a government agency tests several samples of water for safety. as part of his examinations, he determines the concentration of lead that is present in each sample.
which method of expressing concentration should the hydrologist use to describe the concentration of lead in the water?
a) ppm or ppb
b) volume percent
c) mass-volume percent
d) mass percent
Answers: 1
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Bohr's model could only explain the spectra of which type of atoms? single atoms with one electron single atoms with more than one electron bonded atoms with one electron bonded atoms with more than one electron
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About 70 percent of the earth's surface is water-covered, and about 96.5 percent of all earth's water is salt water. identify the watery feature on earth that is made of freshwater rather than salt water. a) bay b) glacier c) ocean d) sea it is not incomplete this is the true question
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The number at the end of an isotopeās name is the number.
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What is the ph of a solution that has a hydrogen ion concentration of 1.0 * 10 -9 m?
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Ahydrologist from a government agency tests several samples of water for safety. as part of his exam...
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