Volcanic rocks can be dated using the potassium- 40 clock, a dating method based on the decay of the potassium-40 isotope into the daughter isotope argon-40. The age of volcanic rock can be measured by comparing the amount of these two isotopes present in the rock. Below is a table of data on the half-life of potassium-40. Use this information to create a decay curve for both isotopes. Table 7.7 The Decay of Potassium-10 Number of Hall-lives Elapsed Time (bilons of years) Amount of Potasslum-40 Amount of Argon-40 Present Present 1000 g 500 g 250 g 125g 包59 0 g 750 g 835 g 9375g 26 19 52 Your graph should have; Title, x-axis label (# of half-lives), y-axis label (Mass of Isotope), legend.

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27. Volcanic rocks can be dated using the potassium-
40 clock, a dating method based on the decay of
the potassium-40 isotope into the daughter
isotope argon-40. The age of volcanic rock can
be measured by comparing the amount of these
two isotopes present in the rock. Below is a table
of data on the half-life of potassium-40. Use this
information to create a decay curve for both
isotopes.
Table 7.7 The Decay of Potassium-40
Amount of
Potasslum-40
Present
Amount of
Number of
Half-lives
Elapsed Time
(blons
of years)
Argon-40
Present
1000 g
500g
250 g
125g
625g
26
750 g
875 g
9375g
52
Your graph should have;
Title, x-axis label (# of half-lives), y-axis label (Mass of Isotope), legend.
Transcribed Image Text:27. Volcanic rocks can be dated using the potassium- 40 clock, a dating method based on the decay of the potassium-40 isotope into the daughter isotope argon-40. The age of volcanic rock can be measured by comparing the amount of these two isotopes present in the rock. Below is a table of data on the half-life of potassium-40. Use this information to create a decay curve for both isotopes. Table 7.7 The Decay of Potassium-40 Amount of Potasslum-40 Present Amount of Number of Half-lives Elapsed Time (blons of years) Argon-40 Present 1000 g 500g 250 g 125g 625g 26 750 g 875 g 9375g 52 Your graph should have; Title, x-axis label (# of half-lives), y-axis label (Mass of Isotope), legend.
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