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Apound is approximately 0.45 kilogram. a persons weighs 87 kilograms. what is the personsโs weight, in pounds, when expressed to the correct number of significant figures
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Astable atom that has a large nucleus most likely contains 1. more neutrons than protons. 2.more protons than neutrons. 3.equal numbers of protons and neutrons. 4.changing numbers of protons and neutrons.
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Which statement accurately describes the chemical symbol of an element?The element copper has 29 pro...
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