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How many moles of atoms of each elements are there in one mole (NH^4)^2CO^3
A solution of sodum hydroxide is standardized against potassium hydrogen phthalate (molecular mass = 204.224 g mol-1). From the following data, calculate the molarity of the NaOH solution.
Calculate the pH in the titration of 20.0mL of 0.100 M of acetic acid by sodium hydroxide after the addition to the acid solution of
As part of an internship in a petrochemical company you are given the task of identifying the fractions coming off the distillation tower. The current fraction shows a 1H NMR with only peaks for methyl (CH3) and methylene (CH2) groups
a beaker with 145 ml of an acetic acid buffer with a ph of 5.000 is sitting on a benchtop. the total molarity of acid
a zero-order reaction has a constant rate of 3.70times10-4 . if after 45.0 seconds the concentration has dropped to
The Ka value for acetic acid, CH3COOH(aq), is 1.8x10-5. Compute the pH of a 2.80 M acetic acid solution. Compute the ph of the resulting solution when 3.00mL of the 2.80mL of the 2.80 M acetic is diluted to make 250.0mL solution.
what is the energy of the alpha particle that decays to the first excited state? You may neglect both relativistic effects and the recoil of the daughter
Two types of electrochemical cells which are based on thermodynamic principles can be described. Which of the following statements about these cells is correct
The metal barium crystallizes in a body-centered cubic lattice. If the density of barium is 3.51 g/cm3, what is the unit cell volume?
when most Fe+3 salts are dissolved in dilute nitric acid, the solution is often yellow to orange in color. Why could you not visually detect these colors in the Fe(NO3)3 stock solution?
Assume you are managing a group of very competent, experienced employees. They are doing something routine, such as filling out expense reports
if 9.60 g of ice at -6.3 degc and 35.89 g of water at 91.3 degc are mixed in an insulated container what will be the
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