Two solutions are prepared using the same solute: solution a.0.27 g of the solute dissolves in 27.4 g of t-butanol solution b.0.23 g of the solute dissolves in 24.8 g of cyclohexane which solution has the greatest freezing point change?

The freezing point depression is calculated through the equation,

     ΔTf = (Kf)(m)

where ΔTf is freezing point depression, Kf is the molal freezing point depression and m is the molality of the solute. Using the givens above and the equation,

a. Let x be the molar mass of the solute. The Kf of t-butanol is 9.1 °C/m.
      ΔTf = (9.1)(0.27/x)(1/0.0274)
      ΔTf = 89.67/x

b. Let x be the molar mass of the same solute. Kf value of 20.1 °C/m
     ΔTf = (20.1)(0.23/x)(1/0.0248)
     ΔTf = 186.4/x

The answer would be letter B. 

The number of medals awarded to the track team during the season.

Product should she record in last row of the table

rosa was looking for patterns to predict the products of chemical reactions. she recorded three similar decomposition reactions in the table.she should record 2licl + 3o2.

in the last row of the table. it is the thermal decomposition of chlorate lithium, hence, she should record these products as: lithium chloride ( 2licl ) and oxygen ( 3o2 )   2 > 2 licl + 3o2.