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Firlakuza [10]
3 years ago
12

Has any one done 2020 chemistry paper 1 aqa gcse

Chemistry
1 answer:
Mars2501 [29]3 years ago
7 0

Answer:

what do you mean?

Explanation:

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Complete the following radioactive decay problem.<br>222 86 RN to 4 2 HE + ?​
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Answer:

₈₆²²²Rn    →   ₈₄Po²¹⁸  +  H₂⁴

Explanation:

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₉₂U²³⁸   →   ₉₀Th²³⁴  + ₂He⁴  + energy

8 0
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A

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