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17.07.2019 •
Mathematics
The half-life of a radioactive isotope is the time it takes for a quantity of the isotope to be reduced to half of its initial mass. starting with 195 g of radioactive isotope how much will be left after five lives? round to the nearest gram
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Ответ:
2nd half life: 97.5/2 = 48.75 g
3rd half life: 48.7/2 = 24.375 g
4th half life: 24.375/2 = 12.1875 g
5th half life: 12.1875/2 = 6.09375 g
or you can do
195(2)^(-5) = 6.09375
** rounded to nearest gram = 6 g
Ответ:
To support her discussion it would be best for Alexus to use GRAPH B for her presentation.
Alex should use this graph for her presentation because the number of faulty products APPEARS TO DECREASE LESS on this graph.
Step-by-step explanation: