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Margarita [4]
3 years ago
13

If you have a 4.0 g of radioactive substance left after 4 half-lives have passed then how much did you have originally?

Chemistry
1 answer:
kirza4 [7]3 years ago
6 0

4.0 +4.0= 8.0

8.0+8.0=16.0

16.0+16.0=32.0

32.0+32.0=64.0

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2 years ago
Suppose you were to make a ring from a single strand of gold atoms. How many gold atoms would be required to make such a ring? H
Rudiy27
Let us assume that the ring is a size 7 ring, which has a circumference of 54.3 millimeters. Converting this to centimeters, the circumference of the ring is:

54.3 mm = 5.43 cm

Now, we determine the number of gold atoms that will be present in this:

5.43 / 1 x 10⁻⁹

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We now determine the number of moles this is by:

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8 0
3 years ago
Read 2 more answers
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Answer:

The answer to your question is: KNO₃

Explanation:

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2 years ago
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Answer:

See Explanation

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