How many formula units are equal to a 0.25 g sample of chromium (III) sulfate, Cr2(SO4)3?

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)

What is the indicator of the number of ions in solution? the amount of conductivity the amount of precipitate the amount of solute added

Condensation happens when water vapor cools. true or false? ?