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Genrish500 [490]
3 years ago
5

What's the perimeter of a rectangle with length 12 m and width 5 m? 

Mathematics
2 answers:
maks197457 [2]3 years ago
5 0
Perimeter = 2*(L + W) = 2*(12 + 5) = 2*17 = 34

Perimeter = 34 m

Option D.
Dmitry_Shevchenko [17]3 years ago
5 0
<span>The answer is D. 34 m...Hope this helps.</span>
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a radioactive sample contains 3.00 g of pure 11c, which has a half-life of 20.4 min. (a) how many moles of 11c are present initi
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The number of mole of pure 11C (carbon-11) initially present is 0.2727 mole

<h3>Description of mole </h3>

The mole of a substance is related to it's mass and molar mass according to the following equation

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With the above formula, we can obtain the number of mole of pure 11C. Detail below:

<h3>How to determine the mole of 11C</h3>

From the question given, the following data were obtained:

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Learn more about mole:

brainly.com/question/13314627

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