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Presume you are testing for the presence of Pb2+ in drinking water coming from two different sinks. Design an experiment to test if pb2+ in it per liter of volume be as specific as possible about what procedures you will use. be aware that the amount of lead in water might be quite low. Explain what might you do to increase its concentration in the samples you are testing.
Which of the following has a dipole moment. A) CO2 B) BCl3 C) BrF3 D) more than one of these E) none of these
suppose new element with atomic number 120 is discovered.if some isotopes of this element have 122 nuetrons and some have 124 neutrons,what can you infer about the atomic mass of the element.
The vapor pressure of water at 45.0 degrees celcius is 71.93 mmHg. Calculate the vapor pressure of a solution of 1.50m K2CO3 at this temperature
draw all constitutional isomers of c3h6o. for each of the constitutional isomers show possible stereoisomers. are the
How wil you determie the relative reactivites of aromatic compounds? Outline the procedure that you need to do in the laboratory to determine the relative reactivites of the following:
on a smoggy day in a certain city the ozone concentration was0.34 ppm by volume. calculate the partialpressure atm of
Draw the chemical structure ( including all atoms and bonds) for the compound with the systematic name:6,7-dichloro-5-methyl-4-transaminophenyl-cis-2-heptane-ol
The subsequent four numbers are estimates of the mass of an object- 4.30 g, 5.82 g, 5.79 g, and 5.47 g. Explain what is the standard deviation to two significant figures
Lead poisoning in children used to be treated with intravenous injections of EDTA. If the concentration of EDTA in the blood of the patient is 2.60x10^-8 M and the formation constant for the complex
When preparing the solutions for Part A, an aqueous solution of diamine and NaOH is made. Why isn't a solution of NaOH and diacid chloride in cyclohexane made
The carbon and amino nitrogen of muscle alanine are radiolabeled with 14C and 15N respectively. Outline the metabolic journey that could result in the presence of
A mixture of ethanol and 1-proponol behaves ideally at 36 degrees celcius and is in equillibrium with its vapor. If the mole fraction of ethanol in the solution 0.49, calculate the mole fraction in the vapor phase at this temperature.
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