1. According to Figure 1, for any submersion time after 0 days, what is the order of the 4 deicers, from the
deicar that produced the greatest average percent
change in cylinder leagth to the deicer that produced
the least average percent change in cylinder length?
A. Ca(OH), NaCl, CaCl, MgCl,
B. Ca(OH. NaCl. Mach.. CCL
C. MzCb, CaCl, NaCl, CaOH,
D. MgClNaCl, CaCl, Ca(OH),

Materials will have different energies associated with the electrons inside them. this is related to how strongly bound they are by their work function. if we sandwich a material with a very low energy between two materials with a high energy, we create a trap for an electron. if this trap is very narrow in one direction in comparison to the others, this is approximately a 1-dimensional box that confines the electron. what is the lowest energy of an electron in the box if the thinnest direction across the materials is 4.81 nm?