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Assume the solibility product of Mg(OH)2 is 1.0e-11 at certain temperatures. What minimum OH- concentration must be attained (for example adding NaOH) to decrease the Mg2+ concentration in a solution of Mg(NO3)2 to less than 1.1e-10 M
Calculate the number of grams of HC2H3O2 needed to make 450 mL of 0.322 M solution.
A stock solution is prepared by adding 15 mL of 2.5 M Ba(CN)2 to enough water to make 23 mL. What is the CN- concentration of 10 mL of the stock solution?
Hospital patients are administered oxygen from an pressurized hyperbaric oxygen chamber. 600.0 L of oxygen is compressed in a cylinder at 160.0 atm. What volume of oxygen can a cylinder supply at the given pressure.
Some velomobile seats have been designed to hold ice packs inside their cushions. If you started a ride with ice packs that held 1700 g of frozen water at 0 degrees C , and the temperature of the water at the end of the ride was 32 degrees C.
If the average human body discharges 850 g of CO2 per day, how much NaOH is needed each day for each person in the spacecraft? Answer in units of mol.
In a glass if you are take 1.0 ml of a solution of HCl with a pH of 4.0 and add it to 9.0 ml of distilled water, what would be the pH of the final solution
A gas occupies 1.55 L at 0.80 atm. What pressure would the gas exert if the volume were allowed to increase to 3.50 L?
find the wt percent of C and H. find the smallest integer ration of C:H in the compound
Calculate the fraction of atoms in a sample of argon gas at 360. K that have an energy of 14.0 kJ or greater.
The first-order rearrangement of CH3NC is measured to have a rate constant of 3.61 x 10-15 s-1 at 298 K and a rate constant of 8.66 × 10-7 s-1 at 425 K. Determine the activation energy for this reaction.
suppose you have 10 ml of 0.10m sucrose solution. you add 90 ml of water to the solution.Do the number of sucrose change? Does the molarity change?
Determine the new volume of the mixture if the constant is kept constant at 635 mmHg and all the energy released is converted to work to push the piston.
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