How would you prepare a 1 L solution of 3 M MgO? A.
Put 3 grams of MgO in the beaker and add enough water to reach the 1 L mark.

B.
Put 3 grams of MgO in the beaker and add exactly 1 L of water.

C.
Put 120 grams of MgO in the beaker and add enough water to reach the 1 L mark.

D.
Put 120 grams of MgO in the beaker and add exactly 1 L of water.

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)