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The freezing point of a 1 molar nonelectrolyte such as ethylene glycol is. What is the freezing point in degrees C of a 1.79 molar potassium chloride solution?
Calculate the osmolarity of a solution made from a 1.876 % (m / v) solution of KBr dissolved in water.
Presume that in a certain semiconductor the ratio of electronic mobility, µe, to hole mobility, µh, is equal to 10, the density of holes is Nh=1020 m-3, as well as the density of electrons is Ne=10-19 m-3. The measured conductivity is 0.455 ohm-1...
What is the semimetal? Is there a semimetal in group 4A?
How many independent linear combinations are possible for four 1s orbitals? (b) Draw pictures of the linear combinations of H1s orbitals for a hypothetical linear H4 molecule.
If the absolute temperature of a gas is doubled, what happens to the root-mean-square speed of the molecules?
Calculate the number of photons needed if 92.0 percent of microwave energy is converted to thermal energy of water.
Explain how does adding a small amount of a girgnard reagent solution to a Girgnard reaction help the reaction get started. Explain the presence of water is a major reason a Grignard might not start.
aggressively destroy cancerous cells. If a 2.10 kg mass of body tissue exposed to the radiation absorbed 3.60x105 beta particles, and the RBE factor is 0.80, how many REMS did the patient absorb
Problem- A method for determining the quantity of dissolved oxygen in nautral water reequires a seris of redox reactions. Balance the following chemical equations in that series under the conditions indicated
Calculate the volume of carbon dioxide produced by combustion of the hydrocarbon and calculate the volume of oxygen used up in the reaction with the hydrocarbon.
Identify these two isomers.
Problem- The mass of a proton is 1.00728 amu and the mass of a neutron is 1.00867 amu. What is the mass defect (in amu) of a ^60/27 Co nucleus whose nuclear mass is 59.9338 amu. What is the mass defect in kilograms. What is the energy equivalent o..
How would this computed ? compare with the dimensions of a typical atom? (-1 if much smaller, 0 if about the same magnitude, +1 if much bigger)
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