This chemistry question involves key chemical concepts and calculations. The detailed solution below walks through each step, from identifying the reaction type to computing the final answer.

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2.8.7
Hapa kuna masuluhisho ya maswali yako:
1. a) Tambua sehemu zilizoandikwa A, B na C.
b) Eleza mpangilio wa kielektroni wa atomu yenye elektroni 17. Mpangilio wa kielektroni wa atomu yenye elektroni 17 ni:
c) Tofautisha kati ya atomu na ioni.
2. a) Kokotoa masi ya mola ya kiwanja kifuatacho: CaCO (Ca = 40, C = 12, O = 16)
Step 1: Andika masi ya atomiki ya kila elementi na idadi ya atomu zake katika kiwanja.
Step 2: Jumlisha masi za atomiki zote ili kupata masi ya mola. Masi ya mola ya CaCO ni .
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This chemistry question involves key chemical concepts and calculations. The detailed solution below walks through each step, from identifying the reaction type to computing the final answer.