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Question: If a total of 13.5 mol of NaHCO3 & 4.5 mol of C6H8O7 react, how many moles of CO2 & Na3C6H5O7 will be produced?
Given the following data H Cl bond enthalpy = +431 kJ/mol, ?Hf HCl(g) = -92.31 kJ/mol
What is the common ion effect. Select all that apply. The increase in solubility that occurs when a common ion is added to a saturated solution of a sparingly soluble ionic compound.
Consider the titration of potassium acid phthalate (KHP) with NaOH. If 0.4278g KHP needed 22.86mL of NaOH to reach the phenolphthalein pink end point, explain what is the molarity of the NaOH. Explain molar mass of KHP is 204.22 g/mol.
If 200g of Argon gas (Ar) expands from the initial temperature of 150 degrees celcius and in the process do 3.15 kJ of work and absorbs 1.52 kJ of heat what is the final tempurature of the gas
If every tablet in the problem abouveweights 650 mg. How many kilograms of excipient (lactose/talcum powder/filler) are needed to complete the whole batch?
Calculate the pH at the points in the titration of 40.00 mL of 0.425 M NH3 for the reaction below. NH3(aq) + HNO3 ? NH4+(aq) + NO3?(aq) For NH3, Kb = 1.8x10-5.
If the molar ratio between carbon and tin is 1:1.01, in theory what is the correct value of the above ratio
Consider the two gases, NO and CO2. Ten grams of each are placed in balloons at STP. Which of the following is an accurate comparison?:
44.0 mL of 0.140 M and Na2SO4 and 25.0 mL of 0.160 M KCl Indicate the concentration of each ion present ?
A typcial ultra high vacuum chamber is capable of achieving a pressure of 10^-11 torr. Calculate the average number of molecules per cubic centimeter for this pressure at room temperature.
Write an equation for the formation of an acetal from reaction of excess methanol with benzaldehyde in the presence of an acid catalyst.
For the cell reaction Cu(s) + 2Fe3+ ----> 2Fe2+ + Cu2+ Ecell=0.33V What is the value of the equilibrium constant at 25C for the cell reaction. Either 0.33, 3.82x10^5 or 1.46x10^11
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