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A student has a sample (less than 100 mg) that she would like to test for presence of lead. She has access two different atomic absorption spectrometers (flame and furnace) that could be used for analysis. Please identify what type of AAS method that she would use, and then discuss why this is the case, in a very concise manner.
What is the mass in grams of 2.75 moles of CH4, How many moles are in 365 grams of K2SO4.
Consider an area-source box model for air pollution above a peninsula of land. the length of the box is 15 km, its width is 80 km, and a radiation inversion restricts mixing to 15 m.
How much limestone must be decomposed by heating to produce 150.0 grams of lime, CaO?assuming that the limestone contains 85.0% pure CaCO3.
if 19.65mL of .145M nitric acid is required ti neutralize 50.0mL of barium hydroxide what is the molar concentration of the base? 2HNO3+Ba(OH)2-->Ba(NO3)2+2H2O
what minimum requirement is needed to obtain reproducible results with a single beam spectrophotometer
Calculate how much energy in the form of heat is available from 100mL of this mixture and compare it with the amount available from pure gasoline
which phase transitions more likely to occur?
what minor product(s) might be expected (please draw the full reaction)? Give the detailed reaction mechanism leading to the final product (major).
calculate the moles of CO2 you would theoretically expect from 0.203 grams of an alka-seltzer tablet at 700. torr and 285. K.
the fact that the relative reactivity of C-H bonds of an alkane for free-radical chain halogenation is tertiary > secondary > primary?
A 75.0-mL volume of 0.200 M NH3(Kb=1.8*10^-5) is titrated with 0.500 M HNO3. Calculate the pH after the addition of 25.0 mL of HNO3.
What is the function of a chemical indicator. (is the answer the function is to determine if a sample solution is a base or an acid?) Why is water considered neutral
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