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Calculate the mass percent of a solution that is prepared by adding 53.9 g of NaOH to 426 g of H2O
Calculate the mass percent of a NaCl solution in which 189 g of NaCl is dissolved in 1.38 L of water at 25 °C (density = 0.997 g/mL).
Calculate the molar concentration for each of the following solutions.
What volume of each of the following solutions contains the indicated amount of dissolved solute?
Oxalic acid crystals take place as H2C2O4*2H2O. Compute the concentration of oxalic acid in the solution in g/L. Titrated oxalic acid with sodium hydroxide giving the formula
Three isotopes of silicon occur in nature: 28Si (92.21 %) which has a mass of 27.97693 amu; 29Si (4.70 %) which has a mass of 28.97659 amu; and 30Si (3.09 %) which has a mass of 29.97376 amu. Calculate the average atomic mass for silicon atom.
To what energy level was the electron initially excited. (b) What is the net energy absorbed or emitted by the atom (in units of eV) in the overall process
suppose that 500 g of water vapor condense to make a cloud about the size of an average room. if we assume that the
Why is it important to select the right project before you begin working? share an example from your workplace or one in which you are familiar.
A 1.00 L flask is filled with 1.00 g of argon at 25 °C. A sample of ethane vapor is added to the same flask until the total pressure is 1.350 atm. What is the partial pressure of argon in the flask and what is the partial pressure of ethane in the..
a vessel of 1.000 l is filled with 1.000 mole of h2 2.000 moles of n2 and 2.000 moles of ammonia. nbspconcentration of
Draw an energy diagram to show the progress of reaction (including reactants, transition state(s) and intermediate (if any). Then explain how the major product was determined.
What type of chemical reaction is the following?
A solution is prepared by adding 20g of magnesium hydroxide solid to 2L of water that contains 10-5 MoI/L of Ca(OH)2. Determine the concentration of magnesium in the solution. Is there any solid magnesium hydroxide? How many grams
If 13.57 g of copper(II) chloride react, what is the maximum amount of precipitate that could be formed?
If the equilibrium concentration of Cd2+ ion is 1.5 X 10-6 M, calculate the equilibrium concentration of OH- in an aqueous equilibrium between solid Cd(OH)2 and its ions. (Ksp for Cd(OH)2 is 2.5 X 10-14)
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