Chromatogram number 1 Solvent front = 5.6cm
Sample X distance moved = 3.5cm
Sample Y distance moved = 2.9cm
Sample Z distance moved = 4.8cm
Rf value =
Rf value =
Rf value =
Chromatogram 2
Solvent front = 6.8cm
Sample P distance moved = 2.5cm
Sample Q distance moved = 5.8cm
Sample R distance moved = 1.8cm
Rf value =
Rf value =
Rf value =
Which two samples are the same?
&

Between 2014 and 2016, more than 25,000 children in flint, michigan, drank water that was contaminated with lead from lead pipes. during this time, the city claimed the water was safe to drink. which of these actions could the city have taken to ensure that the drinking water was free from lead?

Which ocean zone has the most abundant primary producer and why a) the abyssopelagic zone ,du to the absence of light and cold water temperatureb) the bathypelagic zone, due to the absence of light and cold water temperaturec) the mesopelagic zone ,due to uts high light availability and warm water temperature d) the epipelagic zone,due to its high light availability and warm water temperature

Which of these expressions are correct variations of the combined gas law? p1v1t2 = p2v2t1 both