Which of the following compounds will be most effective in melting the ice on the roads when the air temperature is below zero?
a. sodium iodide (nai)
b. magnesium sulfate (mgso4)
c. potassium bromide (kbr)
d. all will be equally effective.

Sodium chloride, nacl, is formed when a sodium atom transfers its electron to a chlorine atom. the difference in charge between the two atoms creates a(n) attraction that bonds them together.

The ph is the a.independent variable b.the dependent variable c.control group

An electron is trapped at a defect in a crystal. the defect may be modeled as a one-dimensional, rigid-walled box of width 1.00 nm. (a) sketch the wavefunctions and probability densities for the n 1 and n 2 states. (b) for the n 1 state, nd the probability of nding the electron between x1 0.15 nm and x2 0.35 nm, where x 0 is the left side of the box. (c) repeat (b) for the n 2 state. (d) calculate the energies in electron volts of the n 1 and n 2 states