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marysya [2.9K]
4 years ago
12

Which is an example of a catalyst? heat stirring decrease in temperature

Chemistry
1 answer:
Lorico [155]4 years ago
3 0
I think the correct answer is decrease in temperature
I feel like that’s the right one
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Photosynthesis occurs and extra food is stored in which plant tissue\
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it takes 60 days for 1024 grams of element XY to decay to 32 grams. what is the half life of element XY
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The half life of element XY is 12 days

Explanation:

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Time taken for  1024 grams to decay into 32 grams  = 60 days

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The half life of element XY = ?

Solution:

The Half life is calculated by

N = N_0 (\frac{1}{2})^{\frac{t}{t_{\frac{1}{2}}}

t_{\frac{1}{2}} =\frac{t}{log_{\frac{1}{2}}( \frac{N(t)}{N_0})}}

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t_{\frac{1}{2}} =\frac{60}{log_{\frac{1}{2}}( \frac{32}{1024})}}

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t_{\frac{1}{2}} = 12

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