Question

Consider a rock that is found to have a $^{40}K$ : $^{40}Ar$ molar ratio of 2.23 : 1.0. Assuming the rock originally held no $^{40}Ar$, how old is the rock? Half-life for $^{40}K$ = 1.3 billion years

Name: Consider a rock that is found to have a ^40K : ^40Ar molar ratio of 2.23 : 1.0. Assuming the rock originally held no ^40Ar, how old is the rock? Half-life for ^40K = 1.3 billion years
Uploaded: 2022-07-13T14:22:16-08:00
Duration: 2 min 25 s
Channel: Madhur L
Description: Consider a rock that is found to have a ^40K : ^40Ar molar ratio of 2.23 : 1.0. Assuming the rock originally held no ^40Ar, how old is the rock? Half-life for ^40K = 1.3 billion years

          Consider a rock that is found to have a $^{40}K$ : $^{40}Ar$ molar ratio of 2.23 : 1.0. Assuming the rock originally held no $^{40}Ar$, how old is the rock? Half-life for $^{40}K$ = 1.3 billion years

Consider a rock that is found to have a ^40K : ^40Ar molar ratio of 2.23 : 1.0. Assuming the rock originally held no ^40Ar, how old is the rock? Half-life for ^40K = 1.3 billion years

Added by Sarah S.

Chemistry: Structure and Properties

Nivaldo Tro 2nd Edition

Instant Answer

Solved by Expert Madhur L

07/13/2022

Step 1

In this process, 40K decays to 40Ar with a half-life of 1.3 billion years. The ratio of 40K to 40Ar in a rock can be used to determine the age of the rock, assuming that the rock initially contained no 40Ar. Show more…

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Consider a rock that is found to have a^(40)K:^(40)Ar molar ratio of 2.23:1.0. Assuming the rock originally held no ^(40)Ar, how old is the rock? Half-life for ^(40)K=1.3 billion years Consider a rock that is found to have a 40K : 40Ar molar ratio of 2.23 :1.0. Assuming the rock originally held no 40Ar,how old is the rock? Half-life for 40K =1.3 billion years