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Question 20 (1 point) What is the half-life of the radioactive isotope from the first-order decay plot below? 0. 03 concentra
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Question 18 (1 point) On the phase diagram, point A denotes the and with an increase in pressure at a constant temperature, t
HI Horate Question 17 (1 point) Between Hl and HF, which has the higher boiling point and why? OHF, because HF is smaller tha
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Answer #1

Q20. 70 hours.

Half life is the time at which half of the atoms of radioactive disintegrate. So from the graph we can see that concentration becomes half of it's initial value at time , t= 70 hours.


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