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A Rock from the Moon Was Found to Contain 1

Question 153

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A rock from the moon was found to contain 1.0 A rock from the moon was found to contain 1.0 10<sup>-5</sup> g of uranium-238 and 4.0 10<sup>-6</sup> g lead-206.All of the lead-206 came from the decay of uranium-238.The half-life for this decay is 4.5 10<sup>9</sup> years.How old is this rock? A) 1.0 10<sup>6</sup> years B) 3.3 10<sup>7</sup> years C) 4.1 10<sup>8</sup> years D) 2.5 10<sup>9</sup> years E) 4.1 10<sup>10</sup> years 10-5 g of uranium-238 and 4.0 A rock from the moon was found to contain 1.0 10<sup>-5</sup> g of uranium-238 and 4.0 10<sup>-6</sup> g lead-206.All of the lead-206 came from the decay of uranium-238.The half-life for this decay is 4.5 10<sup>9</sup> years.How old is this rock? A) 1.0 10<sup>6</sup> years B) 3.3 10<sup>7</sup> years C) 4.1 10<sup>8</sup> years D) 2.5 10<sup>9</sup> years E) 4.1 10<sup>10</sup> years 10-6 g lead-206.All of the lead-206 came from the decay of uranium-238.The half-life for this decay is 4.5 A rock from the moon was found to contain 1.0 10<sup>-5</sup> g of uranium-238 and 4.0 10<sup>-6</sup> g lead-206.All of the lead-206 came from the decay of uranium-238.The half-life for this decay is 4.5 10<sup>9</sup> years.How old is this rock? A) 1.0 10<sup>6</sup> years B) 3.3 10<sup>7</sup> years C) 4.1 10<sup>8</sup> years D) 2.5 10<sup>9</sup> years E) 4.1 10<sup>10</sup> years 109 years.How old is this rock?


A) 1.0 A rock from the moon was found to contain 1.0 10<sup>-5</sup> g of uranium-238 and 4.0 10<sup>-6</sup> g lead-206.All of the lead-206 came from the decay of uranium-238.The half-life for this decay is 4.5 10<sup>9</sup> years.How old is this rock? A) 1.0 10<sup>6</sup> years B) 3.3 10<sup>7</sup> years C) 4.1 10<sup>8</sup> years D) 2.5 10<sup>9</sup> years E) 4.1 10<sup>10</sup> years 106 years
B) 3.3 A rock from the moon was found to contain 1.0 10<sup>-5</sup> g of uranium-238 and 4.0 10<sup>-6</sup> g lead-206.All of the lead-206 came from the decay of uranium-238.The half-life for this decay is 4.5 10<sup>9</sup> years.How old is this rock? A) 1.0 10<sup>6</sup> years B) 3.3 10<sup>7</sup> years C) 4.1 10<sup>8</sup> years D) 2.5 10<sup>9</sup> years E) 4.1 10<sup>10</sup> years 107 years
C) 4.1 A rock from the moon was found to contain 1.0 10<sup>-5</sup> g of uranium-238 and 4.0 10<sup>-6</sup> g lead-206.All of the lead-206 came from the decay of uranium-238.The half-life for this decay is 4.5 10<sup>9</sup> years.How old is this rock? A) 1.0 10<sup>6</sup> years B) 3.3 10<sup>7</sup> years C) 4.1 10<sup>8</sup> years D) 2.5 10<sup>9</sup> years E) 4.1 10<sup>10</sup> years 108 years
D) 2.5 A rock from the moon was found to contain 1.0 10<sup>-5</sup> g of uranium-238 and 4.0 10<sup>-6</sup> g lead-206.All of the lead-206 came from the decay of uranium-238.The half-life for this decay is 4.5 10<sup>9</sup> years.How old is this rock? A) 1.0 10<sup>6</sup> years B) 3.3 10<sup>7</sup> years C) 4.1 10<sup>8</sup> years D) 2.5 10<sup>9</sup> years E) 4.1 10<sup>10</sup> years 109 years
E) 4.1 A rock from the moon was found to contain 1.0 10<sup>-5</sup> g of uranium-238 and 4.0 10<sup>-6</sup> g lead-206.All of the lead-206 came from the decay of uranium-238.The half-life for this decay is 4.5 10<sup>9</sup> years.How old is this rock? A) 1.0 10<sup>6</sup> years B) 3.3 10<sup>7</sup> years C) 4.1 10<sup>8</sup> years D) 2.5 10<sup>9</sup> years E) 4.1 10<sup>10</sup> years 1010 years

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