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Paladinen [302]
3 years ago
6

Are Carbon and oxygen are both metalloids?

Physics
1 answer:
Marizza181 [45]3 years ago
7 0
Just carbon is a metalloid not oxygen
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A 12.0-g sample of carbon from living matter decays at the rate of 162.5 decays/minute due to the radioactive 14C in it. What wi
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Explanation:

From;

0.693/t1/2 = 2.303/t log (Ao/A)

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a)

0.693/5670 = 2.303/1000 log(162.5/A)

1.22×10^-4 = 2.303×10^-3 log(162.5/A)

1.22×10^-4/2.303×10^-3 = log(162.5/A)

0.53 × 10^-1 = log(162.5/A)

5.3 × 10^-2 = log(162.5/A)

162.5/A = Antilog (5.3 × 10^-2 )

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b)

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1.22×10^-4 = 4.61×10^-5 log(162.5/A)

1.22×10^-4/4.61×10^-5 = log(162.5/A)

0.26 × 10^1 = log(162.5/A)

2.6= log(162.5/A)

162.5/A = Antilog (2.6 )

A= 162.5/398.1

A= 0.41 decays/minute

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Which is not a compound?
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there isnt a pic

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