1.) A solution of potassium chloride (KCl) is prepared by dissolving 9.63 g of the salt in 1.00 kg water (H2O). What is the freezing point of this solution? (The freezing point of pure water is 0°C (exactly) at 1 atm pressure; the molal freezing-point-depression constant for water is 1.86°C/m.)
2.) A certain element exists in a face-centered cubic structure. The atomic radius of an atom of this element is 159 pm. Calculate the density of this element in g/cm3. (Assume the element has a molar mass of 64.6 g/mol.)
3.) For the following reaction, write expressions for the rate of formation of each of the products. 3 A + 3 B + 2 C â 3 D + 4 E + F
4.) For the following generalized reaction, if the rate of change of D is 1.76âââ10â3 M/s in a given time period, what is the rate of change of B in the same time period? 2 A + B â C + 3 D
1.) A solution of potassium chloride (KCl) is prepared by dissolving 9.63 g of the salt in 1.00 kg water (H2O). What is the freezing point of this solution? (The freezing point of pure water is 0°C (exactly) at 1 atm pressure; the molal freezing-point-depression constant for water is 1.86°C/m.)
2.) A certain element exists in a face-centered cubic structure. The atomic radius of an atom of this element is 159 pm. Calculate the density of this element in g/cm3. (Assume the element has a molar mass of 64.6 g/mol.)
3.) For the following reaction, write expressions for the rate of formation of each of the products. 3 A + 3 B + 2 C â 3 D + 4 E + F
4.) For the following generalized reaction, if the rate of change of D is 1.76âââ10â3 M/s in a given time period, what is the rate of change of B in the same time period? 2 A + B â C + 3 D
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