What should Maria do before she turns on the Bunsen burner to begin the experiment?
Place the classroom fire extinguisher next to
her lab bench.
Inspect the Bunsen burner and gas tubing for
damage.
Move her lab notebook and papers so they
are away from the burner.
Remove her safety goggles so she can see
the burner more clearly.

Which best explains why an iceberg floats?

What is the molarity of the solution produced when 145 g of nacl is dissolved in sufficient water to prepare 2.75 l of solution?

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)