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22-12-2020
Chemistry

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Can someone please help me with these questions

Can someone please help me with these questions class=

Can someone please help me with these questions class=

Respuesta :

vichingmachine vichingmachine

22-12-2020

Answer:

1. 40 grams

2. 20 grams

Explanation:

every 10 years, divide by 2

year 0; 80

year 10; 40

year 0; 80

year 10; 40

year 20; 20

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