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A solution of water (Kf = 1.86 degrees C/m) and glucose freezes at -2.55 degrees C. What is the molal concentration of glucose in this solution? Assume that the freezing point of pure water is 0.00 degrees C. Express the molal concentration numerically.
Calculate the mass (in mg) of KCN needed to make 500. mL of aqueous KCN solution with a pH of 10.00.
what volume of ethylene glycol, a nonelectrolyte, must be added to 15.0 Liters of water to produce an antifreeze solution with a freezing point of - 30 degrees celcius? what is the boiling point of the solution?
Adrenaline is the hormone that triggers the release of extra glucose molecules in times of stress or emergency. A solution of 0.79 g of adrenaline in 33.5 g
How many milliliters of a 0.56 M HCl solution do you need to obtain 0.0046 mol of HCl?
What are the concentrations of each of the ions in a saturated solution of PbBr2, given the Ksp of PbBr2 is 2.1 x 10^-6?
How much heat (in kJ}) is evolved in converting 1.00 mol} of steam at 160.0C to ice at -55.0C? The heat capacity of steam is 2.01 {J/gC}} and of ice is 2.09 J/gC}.
A 50.0 L cylinder of Ar has a pressure of 137 atm at 25 C. What mass of Ar is inside the cylinder?
The solubility of CO2 in water at 25°C and 1 atm is 0.034 mol/L. What is its solubility under atmospheric conditions? (The partial pressure of CO2 in air is 0.0003 atm.) Assume that CO2 obeys Henry's law.
When a 2.41x102 g strip of zinc is dropped into a large beaker containing excess hydrochloric acid, how many grams of gas are formed.
Calculate the pH of the resultant solution of mixing together two solutions of 2 L of 1.0 M acetic acid
A cube of osmium metal 1.500cm on a side has a mass of 76.31g at 25°C. Calculate the mass of 0.1500L of benzene at this temperature.
The second-order reaction, 2 Mn(CO)5 Mn2(CO)10 has a rate constant equal to 3.0 x 109 M-1s-1 at 25°C. If the initial concentration of Mn(CO)5 is 1.0 x 10-5 M.
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