CH4(g) + 2O2(g) = CO2(g) + 2H2O(g) How many moles of oxygen gas (O2) are required to react completely with 0.03 mole of methane (CH4)?

Arollercoaster car at the top of a hill has potential energy kinetic energy chemical energy light energy

Why does his teacher ask him to balance the equation by including the correct coefficient

An electron moved from shell n = 2 to shell n = 1. what most likely happened during the transition? a fraction of a photon was added. a photon of energy was absorbed. a fraction of a photon was removed. a photon of energy was released.