Explain gallium-68 decays by positron emission

Reference no: EM13241781

Gallium-68 decays by positron emission, with a half-life of 68.3 min. How much 68Ga remains from a 10.0 mg sample after 683 min?

1.0 mg

1.0 X 10-10 mg

9.8 X 10-3 mg

2.2 X 10-2 mg

6.1 X 10-7 mg

Reference no: EM13241781

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