Solved

An Ancient Rock Is Found to Contain 40Ar Gas, Indicating

Question 50

Multiple Choice

An ancient rock is found to contain 40Ar gas, indicating that An ancient rock is found to contain <sup>40</sup>Ar gas, indicating that of the <sup>40</sup>K in the rock has decayed since the rock solidified. Any argon would have boiled out of liquid rock. The half-life of <sup>40</sup>K is 1.25 billion years. How long ago did the rock solidify? A) 2.6 billion years B) 0.50 billion years C) 1.8 billion years D) 0.30 billion years of the 40K in the rock has decayed since the rock solidified. Any argon would have boiled out of liquid rock. The half-life of 40K is 1.25 billion years. How long ago did the rock solidify?


A) 2.6 billion years
B) 0.50 billion years
C) 1.8 billion years
D) 0.30 billion years

Correct Answer:

verifed

Verified

Unlock this answer now
Get Access to more Verified Answers free of charge

Related Questions

Q41: An air sample is contaminated with 15O,which

Q45: The stability of The stability</p></div><svg width=

Q47: What mass of 14C (having a half-life

Q51: In a laboratory accident a work area

Q52: A hospital patient has been given some

Q52: The stability of The stability</p></div><svg width=

Q53: Rutherfordium-261 has a half-life of 1.08 min.How

Q56: The radioactivity due to carbon-14 measured in

Q59: An isotope of Tc having a half-life

Q76: Today,the uranium found on Earth contains 0.720%

Unlock this Answer For Free Now!

View this answer and more for free by performing one of the following actions

qr-code

Scan the QR code to install the App and get 2 free unlocks

upload documents

Unlock quizzes for free by uploading documents