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Write the chemical reaction for: KH2PO4/K2HPO4 buffer solution + NaOH (aq) and Write the chemical reaction for: KH2PO4/K2HPO4 buffer solution + HCl (aq)
determine the number of carbon atoms in the compound. Natural abundances: 12C is 98.93% and 13C is 1.07%
a gas expand and does P-V work on the surroundings equal to 294 J, at the same time , it absorbs 196J of heat from the surroundings. what is the change in energy of the system
If the molar enthalpy of water is 6.009 kJ/mol, how much energy is needed for 4.5 moles of ice to melt at STP?
Sulfuric acid is a component of acid rain formed when gaseous sulfur dioxide pollutant reacts with gaseous oxygen and liquid water to form aqueous sulfuric acid.
Calculate the mass of pure water recovered per mass of water in the process feed. A.3) Calculate the weight percent of salt leaving the 5th evaporator. (Note: Thoughtful selection of control volume can save you a lot of algebra.)
A soft drink contains an unknown amount of citric acid, C3H5O(COOH)3. 10.0ml of the soft drink requires 6.42 ml of 9.580 x 10^-2 M NaOH to reach the equivalance point in the following reaction.
the mean activity coefficients for aqueous solutions of NaCl at 25C are given below. Confirm that an improved fit is obtained with the extended law
The compound KB5O8·X H2O was analyzed and found to contain 24.6% of water. If the formula weight of this compound is 293.15 g/mol, what is the number of water molecules (X) in the formula?
What is the meaning typically associated with 1/2 kT, kT, kT/hc, and RT in physically chemistry? Why are these important
what volume of ammonia gas, measured at 660.3 mmhg and 58.2c, is required to produce 6.46 g of ammonium sulfate according to the following balanced chemical equation
Sodium carbonate was used to precipitate silver from a solution. 6.00 grams of silver carbonate were recovered from 1.500L of solution. What was the concentration in ppm of silver ions in the original solution?
Compute the free energy change needed for transport of sufficient protons to make gastric juice of 1 litter at the temperature of 37 degree celsius hence expect above reaction will happen spontaneously?
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