What defines the mass number of an isotope?
A. The sum of the neutrons and protons
B. The su...
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Chemistry, 22.06.2019 09:30
Based on its chemical properties, identify the position of each chemical family on the periodic table.
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Chemistry, 22.06.2019 19:30
Astring vibrates with a frequency of 10 hz. why can't a person hear the sound waves produced by the vibrating string, no matter how large the amplitude of the waves? out! this is homework and due tomorrow! you so much!
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Biology, 21.07.2019 11:40
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Mathematics, 21.07.2019 11:40