DP Chemistry (last assessment 2024)

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Question 18M.3.sl.TZ2.b

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Date May 2018 Marks available [Maximum mark: 1] Reference code 18M.3.sl.TZ2.b
Level sl Paper 3 Time zone TZ2
Command term Estimate Question number b Adapted from N/A
b.
[Maximum mark: 1]
18M.3.sl.TZ2.b

Nuclear power is another source of energy.

Dubnium-261 has a half-life of 27 seconds and rutherfordium-261 has a half-life of 81 seconds.

Estimate what fraction of the dubnium-261 isotope remains in the same amount of time that 3 4  of rutherfordium-261 decays.

[1]

Markscheme

1 64 / 1 2 6 /0.016

 

Accept “1.6%”.

[1 mark]

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