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anygoal [31]
2 years ago
15

Scientists believe that interactions between atoms depend mostly on the arrangement of the outermost electrons in each atom. Thi

s theory is MOST supported by the observation of similar reactions among elements —
with a similar atomic mass
with a similar atomic number
in a group (column) of the periodic table
in a period (row) of the periodic table
Chemistry
1 answer:
vova2212 [387]2 years ago
5 0
I’m pretty sure it’s in a group (column) of the period table. Hope this helps :)))
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Suppose the half-life is 9.0 s for a first order reaction and the reactant concentration is 0.0741 M 50.7 s after the reaction s
bazaltina [42]

<u>Answer:</u> The time taken by the reaction is 84.5 seconds

<u>Explanation:</u>

The equation used to calculate half life for first order kinetics:

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

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Rate law expression for first order kinetics is given by the equation:

k=\frac{2.303}{t}\log\frac{[A_o]}{[A]}     ......(1)

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Putting values in equation 1, we get:

0.077=\frac{2.303}{50.7}\log\frac{[A_o]}{0.0741}

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Putting values in equation 1, we get:

0.077=\frac{2.303}{t}\log\frac{3.67}{0.0055}\\\\t=84.5s

Hence, the time taken by the reaction is 84.5 seconds

6 0
3 years ago
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