Steve, Sarah, Richard, and Kate each run paper chromatography on unknown liquids. Steve gets
a red band, Sarah gets a yellow band and a red band, Richard gets a green band and a red band,
and Kate gets a yellow band and a blue band.
Which student might have had a pure substance?
Sarah
Richard
Kate
Steve

the electron configuration that you gave me has 16 electrons ergo it has 16 protons ergo it is the element sulfur.

> b takes place in the gas phase in an isothermal tubular reactor. the feed is one mole of a per one mole of c, an inert. the entering temperature and pressure are 427°c and 10 atm, respectively. the gas constant r = 0.08206 atm · l/mol · k.

they vary. it used to be meat, grain, bread, candy, beverages, donuts, and fruits/vegetables. now they added exercise in.