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Sedbober [7]
2 years ago
6

80 protons, 119 neutron

Chemistry
1 answer:
g100num [7]2 years ago
4 0
Mercury-199 is composed of 80 protons, 119 neutrons, and 80 electrons.
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An equal number of moles of KI (potassium iodide) and MgI2 (magnesium iodide) are dissolved in equal volumes of water.
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