Write the scientific notation in numerals. 1.2 x 104

Astudent reacts 13 moles of iron with 21 moles of oxygen according to the following equation:

Is a pencil falling to the floor anon contact force, a force, or a contact force

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)