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Galium has a weighted average atomic mass of 69.7 and two naturally occurring isotopes: gallium-69 and gallium-71. gallium-69 has a relative abundance of 60.1% and a mass of 68.9. the relative abundance of gallium-71 is 39.9%. based on the information, what is the mass of gallium-71?

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Galium has a weighted average atomic mass of 69.7 and two naturally occurring isotopes: gallium-69...

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