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Will a solution of 15 percent alcohol freeze?

It depends on the temperature. At standard freezer temperatures, a solution of 15 percent alcohol is likely to freeze. Alcohol has a lower freezing point than water, so the exact temperature at which it freezes will depend on the specific type of alcohol used.


How many molecule of glycerol in 1L of 1M solution?

In a 1M solution of glycerol, there will be 1 mole of glycerol in 1 liter of solution. One mole of glycerol contains approximately 6.022 x 10^23 molecules. Therefore, there are approximately 6.022 x 10^23 molecules of glycerol in 1 liter of a 1M solution.


What volume of a 012 M KOH solution is needed to react with 23 mL of 0.22 M HCl?

To find the volume of KOH solution needed, use the equation: M1V1 = M2V2 where M1 = 0.22 M, V1 = 23 mL, M2 = 0.12 M, and V2 is the volume of KOH solution needed. Rearranging the equation gives: V2 = (M1 × V1) / M2 = (0.22 M × 23 mL) / 0.12 M = 42.33 mL Therefore, 42.33 mL of the 0.12 M KOH solution is needed to react with 23 mL of 0.22 M HCl.


23 C to K approximate room temperature?

Room temperature is commonly considered to be around 20-25 degrees Celsius. To convert 23 degrees Celsius to Kelvin, you simply add 273.15 to get 296.15 Kelvin, which is approximately equivalent to room temperature.


The specific heat of a certain type of cooking oil is 1.75 cal(g and middot and degC). How much heat energy is needed to raise the temperature of 2.40 kg of this oil from 23 and degC to 191 and degC?

The change in temperature is ΔT = 191°C - 23°C = 168°C. The heat energy Q required is given by the formula Q = mcΔT, where m is the mass, c is the specific heat, and ΔT is the temperature change. Plugging in the values: Q = 2.4 kg * 1.75 cal/(g°C) * 168°C = 7056 cal = 7.056 kcal.