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inysia [295]
2 years ago
9

Hydrogen + Chlorine Dot Structur

Biology
1 answer:
Finger [1]2 years ago
5 0
I think this is what you are referring to.

Hope this helps.

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A sample of rock is found to contain 200 grams of a parent isotope.how many grams of the parent isotope will remain after one ha
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Answer: 100 grams of the parent isotope will remain after one half life.

Explanation:

Mass of the isotope present at initial stage = N_o=200 g

The mass of the parent isotope left after the time ,t=N

Time taken by the samle ,t = t_{\frac{1}{2}}

The half life of the sample :t_{\frac{1}{2}}

N=N_o\times e^{-\lambda t}

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

\ln[N]=ln[N^o]-\frac{0.693}{t_{\frac{1}{2}}}\times t_{\frac{1}{2}}

2=\frac{[N_o]}{[N]}

[N]=\frac{N_o}{2}=\frac{200 g}{2}=100 g

100 grams of the parent isotope will remain after one half life.

5 0
3 years ago
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Many fault lines are obvious at the surface. How can the epicenter of an earthquake be located miles away from the fault line?
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There are these sensors in the ground that can sense the ground vibrating 
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Explain why almost all organisms depend on photosynthesis
diamong [38]
Photosynthesis is used by plants to crest food. This is essential to all life because of the oxygen plants give off in the process, and the food source the plant becomes.
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What caused by greenhouse gases? A. the hole in the ozone layer is decreasing B. global warming C. temperature decrease D. weath
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B

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