Ai ơi giúp mình 3 câu này với. 1. Từ CH4 và các chất vô cơ cần thiết khác hãy điều chế cao su isopren 2. Sắp xếp các chất sau theo chiều acid, base tăng dần, giải thích a, 4-clophenol; 2,4-diclophenol; 2,4,6-triclophenol b, HCOOH, CH3COOH, (CH3)2CH-COOH, C6H5COOH 3. C6H6 (xúc tác H2SO4)=>A(xúc tác Br2)=>B(xúc tác H2O, nhiệt độ,p)=>C(xúc tác NaOH, 300 độ, 200atm)=>D

What diagram shows the ionic compound of magnesium oxide

What causes different colors to appear in the sky? the absorption of light by air molecules the reflection of light by bodies of water the greenhouse effect in earth's atmosphere the scattering and reflection of light by dust particles

Amines are good nucleophiles, even though they are neutral molecules. how would the rate of an sn2 reaction between an amine and an alkyl halide be affected if the polarity of the solvent is increased? amines are good nucleophiles, even though they are neutral molecules. how would the rate of an reaction between an amine and an alkyl halide be affected if the polarity of the solvent is increased? because both reactants in the rate-limiting step are neutral, the reaction will be faster if the polarity of the solvent is increased. because both reactants in the rate-limiting step are neutral, the reaction will be slower if the polarity of the solvent is increased. because both reactants in the rate-limiting step are neutral, the reaction will occur at the same rate if the polarity of the solvent is increased. request answer