Balanced chemical equation:Copper( ii) oxide solid +dilute sulphuric acid​

What is the percentage by mass of silicon (si) in iron aluminum silicate (fe3al2(sio4)3)?

Indicate whether the specified alkyl halides will form primarily substitution products, only elimination products, both substitution and elimination products, or no products when they react with sodium methoxide. 1-bromobutane 1-bromo-2-methylpropane 2-bromobutane 2-bromo-2-methylpropane

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