What is the total number of moles nh3 produced when 10 moles of h2 reacts completely with n2

For each of the following types of reactions, write a general reaction formula in the symbolic form—for example, a + b → ab. single-displacement double-displacement synthesis decomposition

If 90.0 grams of ethane reacted with excess chlorine, how many grams of dicarbon hexachloride would form

What is the ph of a solution that has a hydrogen ion concentration of 1.0 * 10 -9 m?