Thinking about the position of the signal due to hydrogen in the NMR spectra of the following species, rank them in order of the frequency required to flip the spin of the H atom from lowest to highest: a. H-H
b. H-F
c. H-Br
d. H-Li
e. H-C

a force of 500                  

hey there!

mass = 6.75 g

volume =   9 cm³

therefore:

d = mass / volume

d   = 6.75 / 9

d = 0.7 g/cm³

answer b

to improve her experimental investigation, dalila should add a row in which no fertilizer is used. by a having a contrasting row in which no fertilizer is used, she will have a control group that will her understand the effects of the fertilizer in the plant developments vs the development of the plant when no fertilizer is used.