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I really need part B and C ASAP !!!!!! please if anyone could help me it would mean so much :(! It’s really hard for me to understand all this :(

I really need part B and C ASAP please if anyone could help me it would mean so much Its really hard for me to understand all this class=

Respuesta :

b is because the table shows the amount of time it decayed i think, and c is element b because it’s decaying at a faster rate

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