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AnnyKZ [126]
3 years ago
6

BARINLY PLS HELP ME ASP !!! it’s science I need help fast pls

Chemistry
1 answer:
vesna_86 [32]3 years ago
4 0
D. All of the above
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The time required for one-half of the atoms from a sample of a radioactive substance to decay is called its _____.
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The decomposition of nitrogen dioxide to nitrogen monoxide and oxygen gas is a second order process as suspected in the previous
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Explanation:

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                  t_{1/2} = \frac{1}{[A_{0}]k}     ....... (1)

Second half life of this reaction will be t_{1/4}. So, expression for this will be as follows.

          t_{1/4} = \frac{1}{k} [\frac{1}{[A]_{f}} - \frac{1}{[A_{0}]}]  ...(2)

where [A]_{f} is the final concentration that is, \frac{[A]_{0}}{4} here and [A]_{i} is the initial concentration.

Hence, putting these values into equation (2) formula as follows.

        t_{1/4} = \frac{1}{k} [\frac{4}{[A]_{0}} - \frac{1}{[A_{0}]}]

                      = \frac{3}{[A_{0}]k}     ...... (3)

Now, dividing equation (3) by equation (1) as follows.

           \frac{t_{1/4}}{t_{1/2}} = \frac{3}{[A_{0}]k} \times [A_{0}]k                  

                                    = 3

or,                       t_{1/4} = 3 t_{1/2}    

Thus, we can conclude that one would expect the second half-life of this reaction to be three times the first half-life of this reaction.

6 0
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