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In the laboratory you dissolve 15.4 g of zinc acetate in a volumetric flask and add water to a total volume of 500 mL.
Determine the concentration of the sodium hydroxide solution? Considering this balanced equation given as :
Gold miners then react the basic aqueous product solution from the above equation with Zn dust to get gold metal. Write a balanced redox reaction for this process.
A polymer sample combines five different molecular-weight fractions, each of equal weight. The molecular weights of these fractions increase from 20,000 to 100,000 in increments of 20,000.
At 0.0oC, if the volume of air is 2.5 mL and the pressure of the atmosphere that day is 835 mmHg, what is the number of moles of air?
Calculate the uncertainty in position. The function Ax(1-(x/a)) is an acceptable wave function for the particle in the one dimensional
What volume of ammonia at 25 °C and 1.5 atm pressure is needed to produce 500 g of urea?
Define Ideal gas law, Calculate the free energy of mixing when 1 mole of liquid A is mixed with 4 moles of liquid B at 25 degrees C to form an ideal solution. What is the change in chemical potential of component A?
The enthalpy change for melting ice at 0C and constant atmospheric pressure is 6.01 kJ/mol. Calculate the quantity of energy required to melt a moderately large iceberg with a mass of 1.40 million metric tons.
The molar mass of an unknown salt is 75.6. If 2.29 g is added to 71.2 mL of water the temperature changes from 20.70oC to 21.39oC. What is the molar heat of solution (J/mol) of the salt?
A student prepared a stock solution of the assigned compound by weighing 2.345 grams of Cu(NO3)2. 6H20 and diluting it with water to a final volume of 25.00mL.
What is the theoretical yield (in grams) of the precipitate when 22.2 g of iron(II) chloride reacts in solution with 10.91 g sodium hydroxide
Calculate the pH of a buffer tht contains 0.60M ammonium chloride
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