Nitrogen gas can be prepared by passing ammonia over copper(II) oxide, and the other products are copper metal and water vapor. If a sample containing 9.62 moles of NH₃ is reacted with excess copper(II) oxide, how many grams of N₂ will be formed?

Which of the following is most likely true about water in chemical solutions?

Consider hydrogen in an excited state n = 5n=5 that emits photons to reach the ground state. there are various possible transitions other than straight to the ground state that can occur; for example, it can drop to the n = 3n=3 state followed by the n = 3n=3 to the ground state transition. which of the possible transitions will result in the emission of a photon in the visible region?

If you burn 46.6 g of hydrogen and produce 416 g of water, how much oxygen reacted