Discuss how long does it take ddt to decay from
Discuss how long does it take DDT to decay from the 375 ppbm to15 p pbm in a soil sample ? A biochemist studying the break down in soil of the insecticide DDT finds that it decays by a first-order reaction with a half-life of 12 yr.
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At 25 degrees Celsius a 20 L gas cylinder was brought outside to fill a 2000 L He weather balloon on a winter morning at the -10 degrees Celsius and with a pressure of 1.5 atm.
Explain which molecule would have the most energy at 25 degrees Celsius If the above gas molecules were all moving at the same speed, put them in order of increasing temperature?
Determine how would you design a pair of sunglasses by using Polaroid film in such a way that they significantly decrease the intensity of reflected light reaching the eyes?
Discuss what would then be the pressure in the bulb be, in mmHg, if the number of moles were reduced to 8.51x10e-4? Then about what temperature would the gas in the bulb need to be heated to raise the pressure in the bulb to 1atm?
The middle sheet consists of its transmission axis aligned at 45 degrees with respect to the top and bottom sheets. Determine what fraction of incident unpolarized intensity is transmitted via the stack?
A curious statistics professor of the large lecture section is wondering how many of her students arrive to class before she does. She decided to gather some data by counting number of students that are sitting in the classroom when she arrives 20
How many grams of K20 were in the sample that was analyzed if the O2 produce from the reaction exerted a pressure of 3.23x 10 to the 3rd torr in a 10.0 mL volume at 25 degrees Celsius.
Explain how could you separate phenyl acetic acid from the toluene? When carbon dioxide is bubbled thru a solution of benzyl magnesium bromide, and the resulting mixture is acidified, phenyl acetic acid is produced.
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A 2016 survey of undergraduate students considered this further and found that compared with students that did not use cannabis at least once
Problem: An infant with known congenital heart disease presents with weight loss, tachypnea, and hepatomegaly.
For a research topic on evaluating the access to health services for commercial sex workers as a mixed method approach provide the methodology
The healthcare provider ordered a urine culture for a client. Which item would a nurse need for a urine specimen collection from an existing indwelling
The nurse practitioner (NP) evaluates a client with complaints of a burning sensation in the chest that often occurs after meals and is exacerbated
I am writing a dissertation topic on the utility of community based interventions in post exposure support to survivors of IPV in uMzingwane district
A 12-month-old child presents with fever of 100.9, lethargy, vomiting and tachypnea. The history is significant for recent hand-foot-mouth disease infection.