October 2018 1 40 Report
1. jika 38 gram MgSO4 x H2O dipnskn, akn dihaslkn 20 gram senywa anhidrat. hrgq x adlh... (Ar S=32, Mg=24, O=16)
2. sbnyk 10 cm³ hidrokarbon tept bereaksi dgn 40 cm³ oksigen mnghslkn 30 cm³ krbon dioksida. jika volum semua gas diukur pd suhu & tekanan sm, mka rums hidrokarbon adlh
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