Lead nitrate can be decomposed by heating. Theoretically, the chemical reaction should produce 6.7 g of PbO. What is the percent yield of the reaction if 6.43 g of PbO are produced when the lead nitrate is heated? 2Pb(NO3)2(s) -> 2PbO(s) + 4NO2(g) + O2(g)

A-44%

B-56%

C-67%

D-82%

E-96%

F-100%

Temperature is _related to the average kinetic energy of a gas. inversely directly not disproportionally

Before it was launched, a helium-filled balloon had a pressure of 201 kpa at a temperature of 27°c. at an altitude of 15,000 m, the pressure had decreased to 2.5 kpa and the temperature had dropped to -14 °c. the volume of the balloon increased to 59.3 m3. what is the original volume of the balloon? 13 m3 0.85 m3 0.077 m3 1.17 m3

What can be done to make a solid solute dissolve faster in a liquid solvent?