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Leave the concentration, light source, and width of the sample at constant values. Move the light sensor detector closer to and farther from the sample. Does the absorbance value change as you move the detector? Explain your observation on the molecular level.
What factors can effect retention time. What factors might I change and how to increase the retention time of a polar compound
A balloon is filled to a volume of 5.0 102 mL at a temperature of 29.0°C. The balloon is then cooled at constant pressure to a temperature of 1.00 102 K. What is the final volume of the balloon?
The Blood ph is 7.4, with buffer solution by dissolving dihydrogen phosphate (Ka= 6.2 x10^-8) and disodium hydrogen phosphate (Ka= 3.6x 10^-13). Find mole ratio Na2HPO4/ NaH2PO4.
Draw a partial MO diagram between px-orbitals of silicon and the appropriate halide for trimethylfluorosilane and trimethyliodosilane.
Is it true that an HCl/NaCl mixture will act as a more effective buffer than a mixture of CH3COOH & CH3COONa
what volume of 0.52 N NaOH would you need to make 20mL of distilled water that has pH 7 to a new pH 11.82?
If you start the experiment with 0.500 grams of Nickel (II) Acetate Tetrahydrate, how many grams of nickel acetate are in the sample
describe the location of the carbon electrons. the answer is 3 unpaired electrons in sp2 orbitals and one unpaired electron in a 2p orbital
Problem- What mass of potassium chromate is needed to add to exactly 500g of water to produce a solution with vapor pressure of 21.50 torr at 24 C
Write the balanced equation. What is the limiting reagent? What is the maximum number of grams of water which can form from this reaction? Find the number of moles of excess reactant at STP.
a. how many moles of stomach acid would be neutralized by onetablet of regualr strength maalox that contains 600mg of
Next an electric force acts on the helium nucleus and does 7.110-9 J of work on the particle. Now what are the following values?
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