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How much energy, in joules, must be absorbed to convert to Na^+ all the atoms present in 1.00mg of gaseous Na? The first ionization energy of Na is 495.8kJ/mol.
A. 0.0464JB. 46.4JC. 0.0216JD. 1.14*10^4J21.6J
What is the pH of a solution prepared by adding 66.0 ml of 0.100 M HCl to 43.0 ml of 0.200 M NaOH
A soluble iodide was dissolved in water. Then an excess of silver(I) nitrate, AgNO3 was added to completely precipitate out all the iodide ion as silver(I) iodide, AgI. if 1.545 grams of soluble iodide gave 2.185g of silver(I) iodide, then
consider a mixture of air and gasoline vapor in a cylinder with a piston. the original volume is 40. cm3. if the
a certain anesthetic contains 64.9 percent C, 13.5 percent H, and 21.6 percent O by mass. at 120 grades celcius and 750 mmHg, 1.00 L of the gaseous compound weighs 2.30g. What is the molecular formula of the compound?
The enthalpy of vaporization of water at 373 K and 1 bar is 40.7 kJ/mol and the molar heat capacities are 75.3 J/(mol K) for liquid and 33.6 J/(mol K) for gaseous water. Find the enthalpy of vaporization of water at 273 K and 1 bar.
What is the strongest Bronsted-Lowry acid in the chemical reaction shown below. 2 HNO3 (aq) + Ba(OH)2 (aq) ---> Ba(NO3)2 (aq) + 2 H2O (l) a) HNO3 b) Ba(OH)2 c) Ba(NO3)2 d) H2O
The osmotic pressure of the solution is measured to be 8E-4 bar at 25 C. What is the calculated molar mass of the protein?
Describe an electrochemical cell for which the following are the cell reactions. (A cell description includes the physical description of the anode and anode compartment with dissolved species,
what is the final temperature of 100 g of water, initially at 20 Celsius , to which 1000 calories (cal) are added
A solution is 2.25% by weight NaHCO3. How many grams of NaHCO3 are in 250.0 g of solution
An element crystallizes in a body-centered cubic lattice. The edge of the unit cell is 3.06 , and the density of the crystal is 7.01. Calculate the molar mass (in g/mol) of the element.
How much heat is evolved when 1235 g of water condenses to a liquid at 100°C? ΔHcond = -40.7 kJ/mol.
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