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Shtirlitz [24]
2 years ago
15

Please help!!! ASAP

Chemistry
1 answer:
bekas [8.4K]2 years ago
5 0

Na 2Co3

1*23=23. 2*12=24. 6*16=96

23+24+96=143

(23*100)/143. (24*100)/143. (96*100)/143

=16%. =16.7%. =67.1%

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