In a hair sample drug test for cocaine that uses a G.C./M.S. , what is the stationary phase? I think the mobile phase would be Helium but l’m not sure about the stationary phase. If a research paper says it uses a ” 5% polysilphenylene-siloxane column”, would that long word be the stationary phase? Thanks.
Dan wants to test the effects of different amounts of antibiotics on bacteria. While setting up his experiment, he makes sure to use the same type of antibiotic, the same type of bacteria, and the same type of incubator for each trial. Which phrase below best describes this part of the experiment?
Detail the products of combustion and the correlation between these products and firefighter safety, both during an incident and during salvage and overhaul of the structure. List and explain the safety measures that should be in place to ensure that firefighters are not affected by these products?
Assuming that the smallest measurable wavelength in an experiment is 0.550 fm (femtometers), what is the maximum mass of an object traveling at 297 m·s–1 for which the de Broglie wavelength is observable? please explain how you got the answer
https://docs.google.com/document/d/1ozB8fMaeamsgxa… this is the link to the assignment. please show all work for how you got answers. thanks
What is the molar concentration of the HNO3 solution resulting from mixing 5.0mL of 3.5 M HNO3 and 95mL of 0.20 M HNO3?
An ice cube having a mass of 50 grams and an initial temperature of -10 degrees Celsius is placed in 400 grams of 40 degrees Celsius water. What is the final temperature of the mixture if the effects of the container can be neglected? Discuss your answer.
Holly reacts 625.0 mL of 0.4899 M AgNO3 with excess Na3PO4 to form a precipitate of Ag3PO4. Calculate theoretical yield in grams
The unit cell for xenon fluoride is given below. what is the formula? if the unit cell has a height of 702pm and a length of 432pm, what is the density (in g/cm3)?
Lead is malleable, So it can be pounded into flash eat without breaking. How does the bonding within lead help text me in this property?
