If 24. 7 g of no and 13. 8 g of o₂ are used to form no₂, how many moles of excess reactant will be left over? 2 no (g) + o₂ (g) → 2 no₂ (g).

Aschool cafeteria has 40 tables. 35% of the tables have 8 chairs at each table. the remaining 65% of the tables have 6 chairs at each table. complete the model. then complete the statements to find the total number of chairs in the cafeteria.