In the following reaction, Pb3 04 + HCl → PbCl2 + H2O + Cl2, 10.0 g of Pb304 are used with 8.0 g of HCl. What is the theoretical
yield of PbCl2 ?

Aballoon inflated with three breaths of air has a volume of 1.7 l. at the same temperature and pressure, what is the volume of the balloon if five more same-sized breaths are added to the balloon?

Select each correct answer. more than one answer may be correct. which of the following is a characteristic of unicellular organisms? they can possess tissues and organs. all of their functions are performed by a single cell. they are usually microscopic. each of their cells is specialized to perform a specific function.

Achange in the number of neutrons in an atom will change an blank . when the number of protons changes in an atom, a new element will form.