Help me out please?

Why was the nationalist party more popular in china’s cities than in the countryside?

Which of the following is not a requirement to become a us representative (congressman/congresswoman)? a. be at least 25 years old b. have been a citizen of the united states for the past seven years c. be (at the time of the election) an inhabitant of the state they represent. d. hold a college degree

Ascientist performs an experiment where she measures the mass of a piece of metal, pours acid onto the metal, washes the metal, and then re-measures the mass of the metal. the scientist repeats the experiment several times, each time increasing the amount of acid used. the dependent variable in the experiment is the: initial mass of the metal final mass of the metal amount of acid used washing the metal