What is the wavelength, in nanometers, of light with a frequency of 1.97x10^15 Hz? a) 1.52 nm
b) 1.52x10^-7 nm
c) 152 nm
d) 15.2 nm

h let me think

african americans demonstrated their newly found freedom by relocating often in search of relatives whom they had been separated from during slavery. others established schools to educate freed people and they built institutions such as churches and political organizations to advocate for their rights.

c, liquids evaporate, creating a gas

the answer is b. dilution