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Chemistry, 22.06.2019 00:30
Drive down any three characteristic of modern periodic table
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Chemistry, 22.06.2019 07:30
The volume of helium in a blimp is 6.28 x 10^9 millimeters. the density of helium in the blimp is .1786 kilogram/meter^3. find the mass of the helium in the blimp.
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Chemistry, 22.06.2019 11:00
The number to the right of an element's symbol (ex. c-12) identifies the of an isotope.
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Complete the ground‑state electron configuration for these ions using the noble gas abbreviation and...
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