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zavuch27 [327]
3 years ago
15

Choose all that apply. The metric system includes units for measuring:

Chemistry
2 answers:
zalisa [80]3 years ago
3 0

Answer:

weight, length, speed

AfilCa [17]3 years ago
3 0
I know that one of the answers is weight
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There are two naturally occurring isotopes of boron. 10 B has a mass of 10.0129 u. 11 B has a mass of 11.0093 u. Determine the a
Vanyuwa [196]
<h2>Natural Abundance for 10B is 19.60%</h2>

Explanation:

  • The natural isotopic abundance of 10B is 19.60%.
  • The natural isotopic abundance of 11B is 80.40%.
  • The isotopic masses of boron are 10.0129 u and 11.009 u respectively.

For calculation of abundance of both the isotopes -

Supposing it was 50/50, the average mass would be 10.5, so to increase the mass we need a more percentage of 11.

Determining it as an equation -

10x + 11y= 10.8

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By taking the denominator away from the numerator

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y = 0.8

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