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Calculate the mass of propylene glycol that must be added to .360 kg of water to reduce the vapor pressure by 2.87 torr at 40 degrees celsius (Ph20 at 40 degrees = 55.3)
Determine how much dolomitic lime(is an anhydrous carbonate mineral composed of calcium magnesium carbonate CaMg(CO 3 ) 2 ) is required to apply to raise the pH to 7.0?
Which of these given nutrients is likely to limit production if the light supply is adequate and there is no nitrogen fixation?
An expanding gas does 150.0 J of work on its surroundings at a constant pressure of 1.01 atm. If the gas initially occupied 68.0 mL, what is the final volume of the gas.
When 0.800 g of Ca metal is added to 200.0 mL of 0.500 M HCl(aq), a temperature increase of 13C is observed.Assume the solution's final volume is 200.0 mL, the density is 1.00 g/mL.
Just transfer this solution completely to a flask of 1L volumetric and dilute to exactly 1 liter and then compute the Fe 2+ ion concentration.
Explain qualitatively how the following would change the calculated surface concentration of SO2 assuming a gaussian plume from a smoke stack that follows the gaussian equation for the concentration of SO2
Determine the ionization constant for Hypochlorous before addition of any Potassium hydroxide, KOH and after addition of 25.0 mL of KOH ?
how many meters away is a cliff if an echo is heard one half second away? assume that sound ws traveled at 343 m/s on that day.
Determine What is the final concentration and calculate what is the Ksp of this salt at temperature of 25 degrees Celsius?
Hydrochloric acid HCl are permitted to react at atmospheric pressure and the volume change is -71.1 liters then determine how much PV work is done?
In a second experiment, I(electric current) broke down a sample of H 2 O into 1.45 grams of hydrogen and 11.51 grams oxygen. Are these results reliable with the law of exact extent?
2.0 moles of a nonelectrolyte solute are added to 1.0 kg of an unknown solvent. The freezing point is depressed by 7.9 K. Calculate the molal freezing point constant (Kf?) for this solvent.
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