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Using the following data, a researcher heated a 250.0 gram sample of pure uranium metal in excess oxygen. The resulting oxide was determined to weigh 294.9 grams. Determine the empirical formula that the researcher obtained for the oxide using the above data.
1. U3O6
2. U3O7
3. U3O8
4. U2O6
5. U4O11
In order to induce the error in the precision and accuracy section ,a) would the balance be registering masses too low or too high?
why does ch3-ch2-o-h have a higher boiling point than ch3- o-ch3 even though they have the same molar mass? use
From this information and the atomic mass, calculate the edge length of the unit cell. Now assume that rubidium atoms are spheres. Each corner sphere of the unit cell touches the body centered sphere. Calculate the radius of a rubidium atom.
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what celsius temperaturet2 is required to change the volume of the gas sample in part a t1 35 degrees celsius v1 1120
A reaction has an activation energy of 110 kJ/mol and a rate constant, k=1.2 x 10^-12 s-1 at 0?C. At what temperature will the rate constant k=5.1 x 10^-7 s-1.
a 10.00g sample of toothpaste contaning stannous fluoride gives0.145g precipitate of stannous phosphate.what is the percentage of snf2 in the toothpast sample.
Calculate the mass of aluminum deposited on the purified aluminum metal by the application of a current of 1.225 kiloamperes for 30 minutes from a very large quantity of a solution containing Al3+ ion in the Al2O3/Na3AlF6 molten state.
What mass of iron would be required to cover a football playing surface of 120 yds × 60 yds to a depth of 1.0 mm?
Assume you dissolve 0.235 g of the weak acid benzoic acid, C6H5CO2H, in enough water to make 5.00 102 mL of solution and then titrate the solution with 0.163 M NaOH.
For one mol sample of an ideal gas at STP, is it possible to suggest an isobaric process that will result in the volume of the gas doubled and its absolute temperature tripled and Is it possible to carry it out via non isobaric process
If pH = 6.4, calculate the molar concentration of H^+ (aq) in the solution. If pH = 6.4, calculate the molar concentration of OH^-(aq) in the solution.
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