The reaction of fluorine with ammonia produces dinitrogen tetrafluoride and hydrogen fluoride. If you have 66.6 grams of NH3, how many grams of F2 is required to complete the reaction? 5F2 + 2NH3 N2F4 + 6HF

A100-watt light bulb radiates energy at a rate of 100 j/s. (the watt, a unit of power or energy over time, is defined as 1 j/s.) if all of the light emitted has a wavelength of 525 nm , how many photons are emitted per second?

Calculate the molar mass of aluminum oxide (al2o3). express your answer to four significant figures.

16. in a reaction that has reached equilibrium, a. the forward and reverse reactions are occurring at the same rate. b. the reactants and products are in equal concentrations. c. the forward reaction has gone further than the reverse reaction. d. there are equal numbers of atoms on both sides of the equation. e. a, b, and d are correct.