Initially, a mixture of two gases is injected into the left chamber of an effusion apparatus. The diagram represents a mixture of two gases after a certain amount of time has elapsed.  If the molar mass of gas A(o) is 40 g/mol, what is the molar mass of gas B(●) ?

A mercury barometer shows a height of 20 inches of mercury.  What is this pressure expressed in units of atm?

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

Using the following equation for the combustion of octane, calculate the heat released when 150.0 g of octane is combusted. The molar mass of octane 114.33 g/mol.  2 C8H18 + 25 O2 → 16 CO2 + 18 H2O        ΔH°rxn = -11020 kJ 

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

Which of the following signs of q and w represent a process where the surroundings are doing work on the system, as well as the system losing heat to the surroundings?

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

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

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

What do you enjoy most about Fall?