Which is greater, the energy of one photon of orange
light or the energy of one quantum of radiation
having a wavelength of 3.36x10-9 m?

Calculate the number of molecules present in 0.750 mol of mgo.

The number at the end of an isotope’s name is the number.

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)