Short Answer
Amphetamines in urine can be confirmed by mass spectroscopy at a concentration of 500 ng/mL.Assuming a urine density of 1.025 g/mL,what is this concentration in parts per million?
Correct Answer:

Verified
Correct Answer:
Verified
Q156: <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB4940/.jpg" alt=" -Which drawing above
Q157: Dinitrogen monoxide is still used as a
Q158: <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB4940/.jpg" alt=" -Which drawing above
Q159: If one mole of each is dissolved
Q160: Commercial cold packs often contain solid NH<sub>4</sub>NO<sub>3</sub>
Q162: At a given temperature the vapor pressures
Q164: <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB4940/.jpg" alt=" -What is the
Q165: If dissociation of MgCl<sub>2</sub> in water were
Q166: The vapor pressure of water at 25°C
Q177: Arrows in the energy diagram below represent