HELP which form of tener do i use here?

En los restaurantes de ecuador, la gente fumar en el exterior. a. necesario b. ni c. siempre d. debe

This formula equation is unbalanced.pb(no3)2(aq) + li2so4(aq) → pbso4(s) + lino3(aq)which coefficient should appear in front of lino3 in the balanced equation? 1234

Write complete sentences using the following irregular stem-changing verbs in the first-person, singular yo form somewhere in your sentences to describe one morning, one afternoon, and one night activity. examples: me acuesto → i go to bed almuerzo → eat lunch pido → i request; order; ask for prefiero → i prefer quiero → i want repito → i repeat morning: afternoon: night: