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sasho [114]
3 years ago
14

some benefits of using ____ on farms instead of human labor are that work can be done much more quickly and the cost of the prod

uction usely is decreased
Geography
2 answers:
dolphi86 [110]3 years ago
6 0

Answer:

the answer is C

Explanation:

<h3>Just did it <3 :)</h3>
Sloan [31]3 years ago
3 0

Answer:

The answer is C

Explanation:

I just did it

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A rock is radiometrically dated to determine its age. The laboratory doing the dating discovers that the rock currently has 200
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Answer: The rock is 2000785 years old.

Explanation:

Expression for rate law for first order kinetics is given by:

t=\frac{2.303}{k}\log\frac{a}{a-x}

where,

k = rate constant

t = age of sample

a = initial amount of the reactant  = 800

x = amount of daughter isotope = 600

a - x = amount left after decay process = amount of parent isotope = (800-600) = 200

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t_{\frac{1}{2}}=\frac{0.693}{k}

k=\frac{0.693}{1000000}=0.000000693years^{-1}

t=\frac{2.303}{0.000000693}\log\frac{800}{200}

t=2000785years

The rock is 2000785 years old.

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