Chemistry, 26.01.2020 06:31 smilingntn33p7pqpp

Gallium 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 this information, what is the mass of gallium-71?

71.1 g/mol
71.0 g/mol
70.9 g/mol
70.8 g/mol

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

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