### Monthly Quizzes

Engineering Software is pleased to announce the introduction of free short energy conversion quizzes.

Here is a free short energy conversion quiz for the month of May -- when you are ready, take the free short energy conversion quiz for the month of May:

What is the molecular weight value for sulfur?
a) The sulfur molecular weight value is:  32 [kg/kmol].
b) The sulfur molecular weight value is:  12 [kg/kmol].
c) The sulfur molecular weight value is:  28 [kg/kmol].
d) The sulfur molecular weight value is:  29 [kg/kmol].
What is the sulfur higher heating value?
a) The sulfur higher heating value is approximately 60,000 [Btu/lbm].
b) The sulfur higher heating value is approximately 12,000 [Btu/lbm].
c) The sulfur higher heating value is approximately 21,000 [Btu/lbm].
d) The sulfur higher heating value is approximately 4,000 [Btu/lbm].
When sulfur reacts with standard air, what is the stoichiometric oxidant to fuel ratio value?
a) Sulfur stoichiometric oxidant to fuel ratio value is:  10.487 [/].
b) Sulfur stoichiometric oxidant to fuel ratio value is:   4.292 [/].
c) Sulfur stoichiometric oxidant to fuel ratio value is:  11.444 [/].
d) Sulfur stoichiometric oxidant to fuel ratio value is:  17.167 [/].
When sulfur reacts with standard air, what is the combustion products flame temperature?
a) The combustion products flame temperature is:  1,972 [K].
b) The combustion products flame temperature is:  2,525 [K].
c) The combustion products flame temperature is:  2,460 [K].
d) The combustion products flame temperature is:  2,484 [K].
What is the sulfur enthaply at standard reference conditions where the temperature is 298 [K] and the pressure is 1 [atm]?
a) The sulfur enthalpy is:  10,000 [kJ/kg*K].
b) The sulfur enthalpy is:  -10,000 [kJ/kg*K].
c) The sulfur enthalpy is:  -20,000 [kJ/kg*K].
d) The sulfur enthalpy is:  0 [kJ/kg*K].

Please note that early next month, June, Engineering Software will post the correct answers to the above free short energy conversion quiz questions for the month of May!

For the month of April, free short energy conversion quiz correct answers are as follows:

What is the kappa value for helium?
The helium kappa value is:  1.66 [/].
What is the gas constant value for helium?
The helium gas constant value is:  2,078.5 [J/kg*K].
What is the specific heat value for helium?
The helium specific heat value is:  5,200 [J/kg*K].
What is the ideal Otto Cycle efficiency dependent on?
The ideal Otto Cycle efficiency is dependent on the compression volumetric ratio and the working fluid physical properties.
For the ideal Otto Cycle, how does an increase in the working fluid mass flow rate impact the power output?
As the working fluid mass flow rate increases, the Otto Cycle power output increases accordingly.