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Explain what is the molarity of an HCl solution whose density is 1.13g/cm3 as well as that contains 25.7% HCL wt/wt?
An atomic emission spectrum of hydrogen shows the following three wavelengths: 121.5 {\rm nm}, 102.6 {\rm nm}, and 97.23 {\rm nm}. Assign these wavelengths to transitions in the hydrogen atom
A different nonscientist is going to make a new semiconductor III-V solid. But for reasons to discussed later, the scientist is going to use tow different elements for the III-atom part,
An important reaction in the formation of photochemical smog is the photodissociation of NO2: NO2 + hv >>> NO(g) + O(g) The maximum wavelength of light that can cause this reaction
CaO can be used as a drying agent. One such application occurs when water is added to dry concrete or cement. The reaction that occurs is Substance CaO(s) + H2O(l) = Ca(OH)2(s)
Problem 3.51A rigid vessel, filled to one-half its volume with liquid nitrogen at its normal boiling point, is allowed to warm to25oC. Explain what pressure is developed. The molar volume of liquid nitrogen at its normal boiling point is 34.7cm3mo..
calculate the molarity and mole fraction of a 1.43 m solution of acetone ch3coch3 dissolved in ethanol c2h5oh. density
Balance the following equations and write the corresponding ionic and net ionic equations (if appropriate). 1) Balance the equation
the thermal equilibrium temperature of the metal sample plus water mixture is 24.6 *C. what is the specific heat of the metal?
A 37.4-L volume of methane gas is heated from 22 degrees C to 78 degrees C at constant pressure. What is the final volume of the gas?
When 4.00g of hydrogen nuclei fuse to form helium in the sun, 0.0265g of matter is converted into energy. Given that the speed of light = 3.00x10^8 m/s and that a jolue = kg*m^2/s^2, calculate how much energy is given off.
You have a .00100 molal solution of NaCl at 298K. If you pick some arbitrary chloride ion in your solution, explain how far away is its negative charge not felt by the other species. Explain what if the solution is 100 molal. 1 molal
The expressions for the P-, Q-, and R-branches, assume that the moment of inertia of the molecule is the same in the excited vibrational states as in the ground state. Derive expressions for the positions of the lines without making these assumpti..
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