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Ageologist determines that a sample of a mineral can't be scratched by a steel nail but can be scratched by a masonry drill bit. based on this information, the sample mineral has to be softer than a. orthoclase. b. fluorite. c. apatite. d. corundum.
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How many grams of oxygen gas are contained in a 15 l sample at 1.02 atm and 28°c? show your work.
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What is the indicator of the number of ions in solution? the amount of conductivity the amount of precipitate the amount of solute added
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