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nydimaria [60]
3 years ago
8

Boston, MA and Barcelona, Spain have very similar latitudes (they are both a similar distance from the equator.) Why is the clim

ate of Boston so different from the climate of Barcelona?
Chemistry
1 answer:
Lyrx [107]3 years ago
3 0

Answer:

The climate of Boston is so different from the climate of Barcelona because regional climate does not depend only on latitude.  The flow of ocean current and its temperature causes this different climates. East coast cities such as Boston have a continental climate because prevailing westerly winds continually bring them under the influence of continental air masses while westerlies bring maritime air masses and therefore a maritime climate to the coast cities such as Barcelona and others.

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<u>Answer:</u> The sample of Cobalt-60 isotope must be replaced in January 2027

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The equation used to calculate rate constant from given half life for first order kinetics:

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where,

t_{1/2} = half life of the reaction = 5.26 years

Putting values in above equation, we get:

k=\frac{0.693}{5.26yrs}=0.132yrs^{-1}

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

k=\frac{2.303}{t}\log\frac{[A_o]}{[A]}

where,

k = rate constant = 0.132yr^{-1}

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[A_o] = initial amount of the sample = 100 grams

[A] = amount left after decay process =  (100 - 75) = 25 grams

Putting values in above equation, we get:

0.132=\frac{2.303}{t}\log\frac{100}{25}\\\\t=10.5yrs

The original sample was purchased in June 2016

As, June is the 6th month of the year, which means the time period will be 2016+\frac{6}{12}=2016.5

Adding the time in the original time period, we get:

2016.5+10.5=2027

Hence, the sample of Cobalt-60 isotope must be replaced in January 2027

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