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Question: If we assume the earth's orbit around the sun to be circular, with a radius of 93 million mi, how many miles does the earth travel (around the sun) in 125 days?
Assume the year is not a leap-year.
The first ionization energy of a gas-phase atom of a particular element is 6.24 x 10^-19 J. What is the maximum wavelength of electromagnetic radiation that could ionize this atom
The O-H stretch of a concentrated solution of an alcohol occurs at a lower frequency than the O-H stretch of a dilute solution.
In a separatory funnel, which would be on top and which would be on the bottom; 10% NaOH and hexane
Suppose you have the following reagents available under standard conditions. (i.e., P = 1 atm for all gases; t = 25 oC; C = 1 mol L-1 for all aqueous species, including H+.) Co(s), Ag+(aq), Cl-(aq), Cr(s), BrO3-(aq), I2(s), F-(aq) (a) Which is the..
When X rays of wavelength 0.093 nm are diffracted by a metallic crystal, the angle of first-order diffraction (n = 1) is measured to be 15.2 degrees;. What is the distance between the layers of atoms responsible for the diffraction?
A solution is prepared by dissolving 6.00g of unknown nonelectrolyte in enough water to make 1.00L of solution. the osmotic pressure of this solution is 0.750 atm at 25.0 C. what is the molecular weight of the unknown solute ( R= 0.0821 L.atm/K.mo..
How does solubility of polar and non-polar molecules in water set up cell membranes and disolve essential bio chemicals
What is the mass of H2O (g) present when equilibrium is established. Vapor pressure of water at 27 C is 26.7 mmHg.
2.55 g of an unknown gas at 39 degrees celsius and 1.05 atm is stored in a 1.95-L flask. What is the density of the gas in L and the molar mass of the gas in g/mol
describe how these three ions can be separated by adding NaI solution. Which will precipitate out first and last? Please solve and show EVERY step of the solution
For each of the following pairs of ions, determine whether a precipitate would form when solutions containing these ions are mixed and write the formulas of any precipitates that should form. Indicate the color of any precipitate that should form.
Cyclopropane has significantly less angle strain than cyclopropane, yet is only slightly lower in energy. How can this be true? How does this information relate to the fact that cyclobutane is not a planar molecule
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