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What is the pH of a solution prepared by dissolving 11 mmol of a weak base in 350 mL of a 0.199-M solution of its conjugate acid if pKa = 5.32 for the acid.
You have 100 moles of solvent (not water). You have determined that 100g of dissolved sucrose incrases its boiling point temperature by 10C. For 100 moles of the pure solvent, how much mass (in grams) of salt
A volume of 18.0 L contains a mixture of 0.250 mols N2 , 0.250 mols O2 , and an unknown quantity of He. The temperature of the mixture is 0 degrees C , and the total pressure is 1.00 atm.
Zinc citrate (Zn_3(C_6H_5O_7)_2) is an ingredient in toothpaste. It is synthesized by the reaction of zinc carbonate with citric acid. 3ZnCO_3(s) + 2C_6H_8O_7(aq) ---> Zn_3(C_6H_8O_7)_2(aq) + 3H_2O(l) + 3CO_2(g).
an empty flask has a mass of 123.4 grams. when the flask is filled with water, the mass is 211.6 grams. if 10 grams of zinc (density=7.14g/cm3) are added to the flask filled with water, what is the new mass of the flask?
Description of Chemistry - Other, What is meant by Molality of a solution and Solute particles? Define. How many solute particles are there in 1m solution containing these substances in one kg of water?
what is moisture content of exhaust? iii) power generated by turbine? iv) at what rate would entropy be generated within turbine? v) assuming the temp of the surroundings T(sigma)=300K what is lost work in kJ/kg of steam?
Using structural formula, how would you write the chemical reaction which explains how the product of the acidification reaction reacts with OH-. How would this explain the changes in solubility?
What are the equilibrium partial pressures of CO(g) and CO2(g) when 2.32 atm CO(g) and excess FeO(s) react in a sealed container at 1000°C? PCO atm PCO2 atm
At what temperature will a gas be at if you allow it to expand from an original 456 mL at 65 celcius to 3.4 L?
calculate the molar solubility of silver iodide in 3.0 M NH3. overall formation constant for Ag(NH3)2" is 1.7 x 10^7
One Way of purifying gaseous H2 is to pass it under high pressure through the holes of a metal's crystal structure. Palladium, which adopts a cubic closest packed structure
Aluminum has a face-centered cubic unit cell. If the atomic radius of aluminum is 125 pm, what is the edge length of the unit cell? A) 177 pm B) 354 pm C) 217 pm D) 500 pm E) 250 pm 3. The meniscus of mercury curves downward in a glass tube formin..
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