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An Atomic Absorbance Spectrometer is sort of like a UV-vis spectrometer conceptually. Both utilize a similar monochromator as well as both use similar detectors as well as both measure optical absorbance. State a paragraph with drawings in which you explain the key differences in source and sample "holder" and why the specific devices used in AAS are necessary.
You and your lab partner take melting points of the same sample. You observe a melting point of 101-107°C, while your partner observes a value of 110-112°C. Explain how you can get two different values with exactly the same sample.
Explain what mass of glycerin (C3H8O3) a non-electrolyte must be dissolved in 200.0g water to give a solution with a freezing point of -1.50 degrees Celsius.
We have a refrigeration unit that works at a pressure of 0.1MPain the evaporator and 1 MPa in the condenser. The refrigeration unit uses a compressor with an efficiency of 90%
An enzyme-catalyzed reaction was carried out in a 0.2M "Tris" buffer, pH 7.8. As a result of the reaction, 0.03 mole/liter of H+ was produced. (pKa of Tris =8.1). What was the ratio of Tris+
the same retention but different selectivity as what precentage of mixtures for acetonitrile/water and tetrahydrofuran/water?
Nitrogen monofluoride, NF, can serve as a ligand in transition-metal complexes. a. Prepare a molecule orbital energy-level diagram of the NF molecule, showing clearly how the atomic orbitals interact.
Hypothetical metal M has a molecular weight 171 g/mol and crystallizes in a body-centered cubic array of atoms in which the length of the unit cell's edge is 547.3 pm
a mixture of mgco3 and caco3 was dissolved in hcl 1.64g of a mixture of calcium carbonate and magnesium carbonate was
A line in the emission spectrum of an atom occurs at a wavelength of 560 nm. What is the energy difference between the two energy levels involved in this emission.
What is the energy of a photon of light that has a frequency of 3.09 x 1018 Hz? You might need to know that c = 3 x 108 m/s and h = 6.63 x 10-34 Js.
consider a neuron at rest at 37degc with ion concentrationsinside and outside the cell as at right inside outsidena 10
How many grams of 02 are consumed by the combustion of 2660g of octane(C8H18)? Balanced equation is 2C8H18 +25O2-->
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