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How many atoms are contained in a block of aluminum metal measuring 8 mm x 5 mm x 12 mm? The density of aluminum is 2.7 g/cm3.
How many atoms are contained in a titanium sphere having a diameter of 18 mm? The density of titanium is 4.506 g/cm3.
Calculate the volume of 5.2 mol of water. Assume that the density of water is 1 g/mL.
Natural uranium consists almost entirely of 238U. To operate a nuclear power reactor, the fuel must be enriched in a lighter fissionable isotope, 235U. If the average molar mass of uranium in a reactor is 236.98, what percent of the fuel consists of the lighter isotope?
Assume that the masses of the two isotopes are exactly 235 and 238 amu.
a 64 g piece of ice at 0 degrees celsius is added to a sample of water at 9 degrees celsius. all of the ice melts and
Could fusing two stable nuclei that have mass numbers in the vicinity of 100 be an energy-releasing process. What is meant by enriched uranium
Helium gas at constant pressure of 7.4 atm, expands in volume from 21.3 L to 79.2 L. The temperature is held at 278 K. Calculate the work done by the gas
Hydrogen and oxygen gas combine explosively to produce water. Write a balanced chemical equation for this process. If 10 mol of hydrogen reacted with oxygen, what volume of liquid water could be produced?
determine the energy of an electron excited from a hydrogen atom using bohrs model. determine the maximum wavelength of
if the transition state has a smaller volume than the reactants (deltaV double dagger
If 30.00 mL of 0.500 M HCl is used to neutralize 10.00 mL of KOH, what is the concentration of the base?
draw Lewis Structures for the following FIVE elements.
Which of the following solids are molecular solids, and which are network solids? Include in your answer the nature of the forces of the attraction in each. C, S8, CO2, SiO2, P4O6, NaCl, MgO, Al I typed the compounds this way because I do not know..
Lead (2) nitrate reacts with potassium iodide to produce lead (2) iodide and potassium nitrate. if 1.23mg of lead nitrate are consumed, what is the mass of the potassium nitrate produced?
Why is it more difficult to precipitate cupric acetate (verdigris) than cupric carbonate hydroxide (malachite)
A 4.70 g nugget of pure gold absorbed 278 J of heat. The initial temperature was 28.0°C. What was the final temperature.
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