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Ivahew [28]
3 years ago
12

Boron (B) has two isotopes, boron-10 and boron-11. The atomic weight of boron is ?

Chemistry
1 answer:
suter [353]3 years ago
8 0

Answer:

Approximately 10,5

Explanation:

The question is not really very specific, because it would need the percentages of those isotopes in the nature. As they are not shown, it should be the median of those two numbers.

atomic weight ≈ \frac{10+11}{2} = 10,5

If you check a periodic table, you'll see it's actually 10,8, but that's because of the thing I told you at first (percentages missing).

Hope I could help.

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I hope this helps :)

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4 years ago
A bottle of the antiseptic hydrogen peroxide is labeled 3.0% (v/v). How many mL of hydrogen peroxide are in a 400 mL bottle of t
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