In what direction do seismic waves carry the energy of an earthquake?
a. away from the focus
b. toward the focus
c. from the surface to the interior
d. through the mantle only

As changes in energy levels of electrons increase, the frequencies of atomic line spectra they emit

The lattice enthalpy (formation of ionic solid from ions in the gas phase) for agcl(s) is -916 kj/mol and the hydration enthalpy (dissolution of gaseous ions into water) is -850 kj/mol. how much heat (in joules) is involved in forming 1l of saturated agcl solution (1.8 × 10-4 g / 100 ml water) by dissolving agcl(s)? assume solution volume does not change much upon dissolution. the equations are given below. ag+(g) + cl−(g) æ agcl(s)

Which of the following is true about the speed of light? it depends on the wavelength.