Determine the mass of one drop of mercury by measuring the mass of 5 mL of mercury. Calculate the number of mercury molecules in one drop of mercury; m5 mL of Hg = 67.67 g. Assume 1 drop = 0.05 mL.

Plz choose one of the compounds from the table and explain how you know the numbers of atoms in your formula. is it possible for two different compounds to be made from the exact same two elements? why or why not? with a limited number of elements (less than 120 are known), does this mean we also have a small number of compounds or do we have a large number of compounds in this world?

Which of the following elements would you expect to have the lowest ionization energy value? fluorine, lithium, neon, nitrogen

No copying 15 pts how does a free-body diagram tell you about the net force on an object?