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Chemistry, 10.09.2021 09:10 blair454

Nguyên tố R là kim loại kiềm, hiđroxit của R chứa 57,5% khối lượng R. a. Xác định R, Cho biết vị trí của R trong BTH ?

b. Tính thể tích dd H2SO4 0,5M cần trung hoà hết 120 g dd ROH 10% trên ?

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Nguyên tố R là kim loại kiềm, hiđroxit của R chứa 57,5% khối lượng R. a. Xác định R, Cho biết vị t...

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