Classify each of the following as a strong acid, weak acid, strong base, or weak base in aqueous solution. $\mathrm{CH}_{3} \mathrm{NH}_{2}$

A box contains 50 batteries, of which 10 are dead and 5 are weak. Suppose you select batteries at random from the box and set them aside for recycling if they are dead or weak. If the first battery you select is dead and the second one is weak, what is the probability that the next battery you select will be weak?

A student intends to titrate a solution of a weak monoprotic acid with a sodium hydroxide solution but reverses the two solutions and places the weak acid solution in the buret. After 23.75mL of the weak acid solution has been added to 50.0mL of the 0.100M NaOH solution, the pH of the resulting solution is 10.50. Calculate the original concentration of the solution of weak acid.

Classify each of the following as a strong acid, weak acid, strong base, or weak base in aqueous solution. $\mathrm{NH}_{3}$

Classify each of the following as a strong acid, weak acid, strong base, or weak base in aqueous solution. $\mathrm{HNO}_{3}$

Classify each of the following as a strong acid, weak acid, strong base, or weak base in aqueous solution. $\mathrm{HNO}_{2}$