How mang moles of oxygen are produced when 2 mol of potassium chlorate decompose

Equal numbers of moles of he(g), ar(g), and ne(g) are placed in a glass vessel at room temperature. if the vessel has a pinhole-sized leak, which of the following will be true regarding the relative values of the partial pressures of the gases remaining in the vessel after some of the gas mixture has effused?

When scientists are ready to publish the results of their experimentation, why is it important for them to include a description of the procedures they used?

The variety of organism living in an area