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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
What mass of this substance must evaporate in order to freeze 230 of water initially at 24? (The heat of fusion of water is 334 the specific heat of water is 4.18 .)
The pressure of 6.0 L of an ideal gas in a flexible container is decreased to one-sixth of its original pressure, and its absolute temperature is decreased to one-forth of the original. What is the final volume of the gas
What mass of precipitate will form if 1.50 L of concentrated Pb(ClO3)2 is mixed with 0.850 L of 0.190 M NaI? Assume the reaction goes to completion.
Draw a reaction coordinate diagram for each of the following nucleophilic addition-elimination reactions. a. the nucleophile being a weaker base than the leaving group
Develop an argument based on bond enthalpies for the importance of SiO bonds in substances common in the Earth's crust in preference to SiSi or SiH bonds
Which one of the following materials can be classified as a semiconductor. B SiO2 Ag Pb GaN
What are the masses in kg of solution A and solution B required, to make 100 kg of a mixture containing 25% ethyl alcohol by mass
The final, dried product weighed 0.1314 g. What is the percent weight of Zn (65.39 g/mol) in the original sample
ch4 2o2 -gt co2 2 h2ohow many liters of ch4 at 27 degrees c and 1.5 atm are required to react with 1 mole of oxygen?v
The temperature inside a pressure cooker is 1150C. Calculate the vapor pressure of the water inside the pressure cooker.
Draw the structure(s) of all of the possible monochloro derivatives of 2,2-dimethylpropane, C5H11Cl. Please Explain.
Following are balanced equations describing heterogeneous reactions. Choose the appropriate equilibrium expression for each.
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