Test for General Chemistry

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13. Massagaza 0.24 g at t = 62Ci pressure of 758 mm Hg. Art. It occupies a volume of 87 ml. Calculate the molar mass of the gas.

30B. In a mass Na2SO4soderzhitsya equivalents as much as 360 g of MgSO4?

90a. The two solutions were mixed substances different NaOH concentrations and volumes: ω1 = 30%, V1 = 0,5 l,  = 1,332 g / ml and c2 = 2 mol / l, V2 = 1,0 liters. Determine the molar concentration of the substance and the molar concentration equivalent (normal) of the substance to the newly obtained solution.


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