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Consider the endothermic reaction: N2O4(colorless gas) 2 NO2(brown gas). What happens to Kc when the pressure is increased?

The light passed through a solution with a light path of 4.0 cm and the absorbance is recorded as 0.80. If light  passes through the same solution at the same wavelength and the light path is reduced to 1.0 cm, the absorbance should be:

A 1.550 g sample of a molecular organic compound is dissolved in 10.0 g of benzene and the freezing point is lowered by 2.13oC. What is the molecular weight, in Da, of the organic compound? (Kf = -5.12oC/m).

Which of the following is a colligative property? 

The molality of a solution is defined as

Which equation do we need to find out how many moles of NH4Cl are in the solution?

Consider the endothermic reaction: N2O4(g) 2 NO2(g).  How the equilibrium is affected by an increase in temperature?

Which of these reactions leads to a decrease in the entropy of the system?