October 2018 1 53 Report
1. sebnyk 14 gram besi dipersenyawakn dgn 10 gram beleranv membntuk 22 gram besi belerang . perbndingn besi & belerng adlh... (Ar Fe=56, S=32)
2. volume 8 gram oksigen (Mr=32) pda STP adlh
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