Consider the following reaction: C2H4(g) + 3 O2(g) → 2 CO2(g) + 2 H2O(g)   ΔH°rxn= −1411.1 kJ/mol. Given that ΔHf(C2H4) = 52.5 kJ/mol and ΔHf(H2O) = −285.8 kJ/mol, find ΔHf(CO2)

Which of the following elements is likely to have the largest second ionization energy? 

A gas occupies 325 mL at 25.0 °C. What volume will it occupy at 75.0 °C if pressure and moles remain constant?

Which two electron configurations represent elements that would have similar chemical properties? I. 1s22s22p4         II. 1s22s22p5                  III. 4s23d5                         IV. 4s23d104p4  

A 5.0 g piece of aluminum and a 10.0 g piece of iron are both heated to 100.0°C then dropped into 100. g of water at 23.7°C. What is the final temperature of the water after it has come to thermal equilibrium? specific heat capacity of iron = 0.45 J/g°C, aluminum = 0.90 J/g°C, and water= 4.184 J/g°C

An electron cannot have the quantum numbers n = ___, l = ___, ml = ___ 

List in order of increasing magnitude (smallest to largest) of electron affinity:  F, Br, Sb, Rb, Se

After reviewing the course schedule, when are class assignments due?

After reviewing the syllabus, how many chapters will we cover in the FIN1100 course?

What is the best way to ask the professor a question about the class?