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An ionic compound forms when calcium (Z = 20) reacts withiodine (Z = 53). If a sample of the compound contains 1.4x 1019 calcium ions, how many iodide ions does it contain?
Use the Frost Circle to draw the energy levels of the Pi molecular orbitals for this ion, show the electronic configuration and explain why the ion is aromatic.
Determine the magnesium content (in ppm) of a 100.00 mL sample of drinking water if the following data were obtained. Titrant is 0.0481 M EDTA, 12.78 mL were used when an aliquot of the sample was at pH 13.0
sand and iron particles that are similar in size and color are mixed together in a beaker. what would be the best
Calculate the partial pressure of water at 23.6 Celsius by interpolation from the vapor pressure table.
A chemist wants to prepare 0.65 M HCl. Commercial hydrochloric acid is 12.4 M. How many milliliters of the commercial acid does the chemist require to make up 1.48 L of the dilute acid?
A solution is made by combining 15.0 mL of 18.0M acetic acid with 5.50g of sodium acetate and diluting to a total volume of 1.50 L. Calculate the pH of the solution.
A solution contained KIO3 and excess KI. 25 cm3 of this solution were acidified and the liberated I2 required 26.8 cm3 of 0.1 M Na2S2O3 for complete recaction.
The following four reactions have standard entropy changes (J/K) at 68oC of 150.7, 20.31, 158.1, and 23.92, respectively. What is the standard entropy change at this temperature for the reaction below ?
Use an orbital diagram to draw the molecular orbital for H2+. Do you predict this molecule will be stable? Explain your logic.
what is the chemical calculation to figure out the following: what mass of the indicated solute does the following solution contain: 17.8 ml of 0.119 M CaCl2
for an ideal rankine cycle steam power plante the following operating parameters are fixed steam enters the
how many grams of methanol (CH3OH) is required to prepare a 0.112 m solution in 440 g of water? answer in units of g.
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