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A(n) is a specified testable expectation about empirical reality that is derived from a theory.
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Choose all the answers that apply. fluorine (f) has an atomic number of 9 and an atomic weight of 18.99. fluorine has a. 9 protons b. 10 neutrons c. 18 electrons d. an atomic mass of 19 e. at least one isotope
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Ahelium balloon contains 16.9 l of helium at stp. how many atoms of helium are in the balloon
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An unknown substance is a white solid at room temperature and has a melting point of 78 °c. which of the following substances is most likely to be the identity of the unknown sample?
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A(n) is a specified testable expectation about empirical reality that is derived from a theory....
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