What is the mass number of an ion with 107 electrons, 157 neutrons, and a 1 charge?

Consider this equilibrium: n29) + o2(g) + 2no(c).nitrogen gas and oxygen gas react when placed in a closed container. as the reaction proceeds towards equilibrium, what happens to the rate of thereverse reaction?

Element before carbon on the periodic table

Which of the following words describe the reality that the universe looks the same from various perspective