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The magnetic properties of B2 are consistent with the p2p MOs being lower in energy than the O2p MO.
A 28.0g sample of an unknown metal at 99.0c was placed in a constant pressure calorimeter containing 85.0g of water at 24.0c. the final temperature of the system was found to be 28.4c. calculate the specific heat of the metal (the heat capacity of..
How many grams of LiCO3 do you need to weigh out to dissolve in the 5.0 liters? If you had started with a 5000. ppm solution of Li2CO3 solution, how many mL of it would you need to pipet into the 5.0 liter to achieve the same 425 ppb Li 1 solution..
Silver chloride often used in silver plating contains 75.27% Ag. Calculate the mass of silver chloride in grams required to make 4.0 g of silver plating.
a sample of gas is collected over water at a temperature of 35.0C when the barometer pressure reading is 742.) torr. What is the partial pressure of oxygen?
In the titration, 20.46 mL of the sodium hydroxide was used to react with 0.1082 grams of KHP. What is the molarity of the NaOH?
Originally, a system contains only HI at a pressure of 1.00 atm at 520 degrees celsius. The equilibrium partial pressure of H2 is found to be 0.10 atm. Calculate Kp. 2HI(g) H2(g)+I2(g)
A 0.22 g sample of a large biomolecule was dissolved in 30.0 mL of solution. The osmotic pressure of this solution was 32 mm Hg at 27 degrees celsius. What is the molar mass of the biomolecule
Fluorine-18 undergoes positron emission with a half-life of 1.10 x 102 minutes. If a patient is given a 248 mg dose for a PET scan, how long will it take for the amount of fluorine-18 to drop to 83 mg
Calculate the binding energy for Cf-253 if one atom of this nuclide has an atomic mass of 253.08417. Express your answer in units of picojoules/nucleus where 1 picojoule = 1x10-12 joule
The air in a laboratory was measured with a barometer to be 7.40 x 10^2 mm Hg. What is the laboratory air pressure in atm?
A natural food color ingredient company works in the extraction of an anthocyanin from purple cabbage. The solubility of this anthocyanin in methanol-water (85:15) and ethanol water (85:15) mixtures are same and the solubility is inversely proport..
If a 220 piece of gold (density =19.32 ) is hammered into a sheet measuring 2.41.0 , what is the average thickness of the sheet in meters?
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