4nh3 + 7o2 > 4no2 + 6h2o

1. how many grams of o2 are required to burn 28.8 gms of nh3

2. how many grams of no2 will be produced from 28.8 gms of nh3

Which of the following are correct values for the ideal gas laws constant r

What is the solubility-product constant of barium sulfate, baso4, if a saturated solution is 1.03 ´ 10-5 m?

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?