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For which of the following pairs are the atoms most likely to form an ionic bond with each other? A) carbon and oxygen B) calcium and chlorine C) chlorine and oxygen D) sodium and magnesium
Give the orbital designation (1s, 2p, 3d, etc) of electrons with the following combination of principal and azimuthal quantum numbers.
Calorimetry is a method used to measure enthalpy, or heat, changes that occur during chemical processes. Two common calorimeters are constant-pressure calorimeters and constant-volume (or "bomb") calorimeters
The solubility of radium oxalate RaC2O4 in warm water is 0.0174 mols/Liter. Calculate Ksp for this compound. Radium is a 2nd column element somewhere below calcium.
How many moles of KMnO4 are present in 25.0 mL of a 0.0900 M solution?
A stock solution of perchloric acid is 70.5% by mass HClO4 and 29.5% by mass water. The density of the solution is 1.67 g·mL-1 at 20 C. Calculate the molarity of the solution.
A concentration of the pollutant NO2 in air of 3.00 ppm (m/v) may be lethal to humans. Will air that contains 1.9 x 10^-3g at NO2 per liter be lethal to humans?
If 200 mL of 0.300 M Cr(NO3)3(aq) is added to 100 mL of 4.0 × 10^-4 M NaF(aq) at 25 degrees celcius, will a CrF3 precipitate form? For CrF3 in water at 25°C, Ksp = 6.6 × 10^-11.
What is the price of a 5.4 microgram piece of copper, if copper sells for $0.15 per cubic inch and has a density
A 49.6-mL sample of gas in a cylinder is warmed from 27*C to 89*C. What is its volume at the final temperature? (Assume constant pressure.)
If the standard silver half-reaction potential is set to .80V, calculate the potential for the zinc half-reaction. Write the net ionic equation for the reaction that occurs in this voltaic cell.
the enthalpy of formation of ethanol, C2H5OH, is -277.0 kJ/mol at 298.15k. calculate the enthalpy of combustion of one mole of ethanol, assuming that the products are CO2 (g) and H2O.
What is the concentration (in M) of the nitrate ion when 17.3 mL of a 0.633 M solution of potassium nitrate is combined with 15.3 mL of a 0.662 M solution of aluminum nitrate to a final volume of 48.1 mL
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