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lora16 [44]
3 years ago
5

I really need help please will give brainliest

Chemistry
2 answers:
Paladinen [302]3 years ago
6 0

Answer:

Astatine is a halogen, Nitrogen is a nonmetal, Krypton is a Nobel gas, Chlorine is a halogen and Sulfur is non metal

Explanation:

Vanyuwa [196]3 years ago
6 0

i am doing this so the other person can get brainly ████████████████████████████████████████

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C-12 and C-13 are naturally-occurring isotopes of the element carbon. C-12 occurs 98.88% of the time and C-13 occurs 1.108% of t
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Answer:

c) (12×0.9889) + (13×0.01108)

Explanation:

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