Where are the first repost of new scientific discoveries published a.) internet sites b.) magazines c.) encyclopedias d.) scientific journals

How could a student test the effect of removing heat from a gas that is stored in a sealed container? what must occur in order for matter to change states?

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)

The sum of the oxidation numbers in a neutral compound is always