14. The diagram below represents a graduated cylinder containing water before and after a rock suspended on a string is lowered into it. What is the approximate volume of the rock suspended in the graduated cylinder?
1. 50 ml
2. 100 ml
3. 250 ml
4. 300 ml

What shape would a molecule with two bound groups and two lone pairs have?

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)

If an atom has 12 protons and 13 neutrons