Chemistry, 18.12.2020 01:00 ghari112345

Niobium-91 has a half of 680 years. After 2.040 years, how much niobium-91 will remain from a 750.00-g sample

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Niobium-91 has a half of 680 years. After 2.040 years, how much niobium-91 will remain from a 750.00...