I really need help this is for a test I will give a lot of points.
30 ml of a 0.5 N lithium hydroxide standard are used to titrate 25 ml of a phosphoric acid sample. What is the molarity, normality and pH of the acid?

Liquid ammonia is produced at high temperatures and under great pressure in a tank by passing a mixture of nitrogen gas and hydrogen gas over an iron catalyst. the reaction is represented by the following equation. n2(g) + 3h2(g) → 2nh3(g) changing all but one experimental condition will affect the amount of ammonia produced. that condition is a) increasing the concentration of both reactants b) changing the temperature within the tank c) decreasing the pressure within the tank. d) increasing only the amount of nitrogen present.

How do you determine the percent yield of a chemical reaction

What is bromine+calcium iodide--> calcium bromide +iodine balanced