The rate of decay of the radioactive isotope Free Neutron 239 is given by: M = -1.1 × 10 ³M where M is the mass of the isotope in grams and t is time measured in minutes. A sample initially contains 3 grams of the isotope. a) What is the mass of the isotope present in the sample after 320 minutes? The mass is grams. Round your answer to 3 significant figures, if needed. 5) How long does it take for the mass of the isotope in the sample to fall to 1.5 gram? It takes t minutes. Round your answer to the nearest integer if needed.

The rate of decay of the radioactive isotope Free Neutron 239 is given by: M = -1.1 × 10 ³M where M is the mass of the isotope in grams and t is time measured in minutes. A sample initially contains 3 grams of the isotope. a) What is the mass of the isotope present in the sample after 320 minutes? The mass is grams. Round your answer to 3 significant figures, if needed. 5) How long does it take for the mass of the isotope in the sample to fall to 1.5 gram? It takes t minutes. Round your answer to the nearest integer if needed.

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter1: Units And Measurement

Section: Chapter Questions

Problem 11CQ: Significant Figures (a) What is the relationship between the precision and the uncertainty of a...

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