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Goryan [66]
2 years ago
9

The distance between A (-4, 2) and B(4, 2) is. answers; a - 6 b - 8 c - 4

Mathematics
1 answer:
Fofino [41]2 years ago
6 0
B-8. This is because -4 to 0 is 4 and then 0-4 is 4. 4+4=8
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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
sveta [45]

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

Mole = mass / molar mass

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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Mole = mass / molar mass

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brainly.com/question/13314627

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