A student titrates an unknown amount of potassium hydrogen phthalate (KHP)

A student titrates an unknown amount of potassium hydrogen phthalate (KHP) with 20.46 mL of a 0.1000 M NaOH solution. KHP (molar mass = 204.22 g/mol) has one acidic hydrogen.

How many grams of KHP were titrated (reacted completely) by the sodium hydroxide solution?