Which of the following reactions shows that the formation of NO2 requires
33.1 kJ/mol?
O A. N(9) +20(9) ► NO2(g) + 33.1 kJ
O B. įN2(g) + O2(g) + 33.1 kJ → NO2(9)
O c. 1 N2(9) + O2(g) NO2(g) + 33.1 kJ
OD. N(g) + O(g) + 33.1 kJ → NO2(9)

Achemist wants to extract copper metal from copper chloride solution. the chemist places 0.50 grams of aluminum foil in a solution containing 0.75 grams of copper (ii) chloride. a single replacement reaction takes place. (ii) chloride. a single replacement reaction takes place. which statement explains the maximum amount of copper that the chemist can extract using this reaction? a) approximately 0.36 grams, because copper (ii) chloride acts as a limiting reactant b) approximately 1.8 grams, because copper (ii) chloride acts as a limiting reactant c) approximately 0.36 grams, because aluminum acts as a limiting reactant d) approximately 1.8 grams, because aluminum acts as a limiting reactant

May someone me with these science questions

Structure of the atoms: discovery of the nucleus in 1909i need answering all of these questions