A sample of rock from moon contains equal number of atoms of uranium and lead - -t- 1-2 for U-4-5- 10-9 years- The age of the rock would be- -160- 4-5- 10-9- years- 9- 10-9- years- 13-5- 10-9- years- 2-25- 10-9- years

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1900's Physics and Wave

A sample of r...

Question

A sample of rock from moon contains equal number of atoms of uranium and lead $(t_{1 / 2} f o r U = 4.5 \times 10^{9} y e a r s)$ . The age of the rock would be:

4.5 \times 10^{9}

years

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9 \times 10^{9}

years

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13.5 \times 10^{9}

years

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2.25 \times 10^{9}

years

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Solution

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Similar questions

(t_{1 / 2} f o r_{92} U = 4.5 \times 10^{9})

U^{238}

= 4.5 \times 10^{9}

23.8 g

U^{238}

20.6 g

P b^{206}

N_{U - 238} / N_{P b - 206}

4.5 \times 10^{9}

^{238} U

= 4.5

\times 10^{9}

238 U

^{206} P b

(t_{\frac{1}{2}}

U = 4.5 \times 10^{9}

)

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