If O2 is collected over water at 40.0 degrees and the total pressure of 745torr what volume of gas will be collected for the complete reaction of 24.78g of Nio?

Answer 1

it is collect by people breathing it in

Answer 2

To find the volume of O2 collected, first calculate the number of moles of NiO using its molar mass. Then, using the balanced chemical equation for the reaction of NiO to O2, determine the stoichiometry to find the moles of O2 produced. Finally, use the ideal gas law, (PV = nRT), to determine the volume of O2 at the given temperature and pressure.