el magnesio (z=12) tiene tres isotopos 24mg, 25mg, 26mg. calcula la masa atómica promedio del magnesio

What are transitions between a liquid and a solid called? identify which way they are transitioning

Find the mass, in grams, of 5.00*10^23 molecules of f2

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)