29 Questions
What is the standard volume of 1 lb-mol of an ideal gas at standard conditions?
379.4 scf
What is the formula to calculate the specific volume of an ideal gas?
v = RT/M
What is the unit of standard pressure?
psia
What is the formula to calculate the density of an ideal gas?
ρg = PM/RT
What is the unit of specific volume?
ft^3/lb
What is the assumption in calculating the properties of an ideal gas?
The gas behaves ideally
What is the typical atmospheric condition for measuring oil volume?
60°F and 14.7 psi
What is the result of the combustion reaction between methane and oxygen?
Production of carbon dioxide (CO2), water (H2O), and energy
Why is it challenging to establish a single set of specifications for natural gas?
Due to the varying composition of natural gas
How are the physical and chemical properties of natural gas determined?
By using the properties of individual components in the mixture
What is the unit of measurement for natural gas?
Standard cubic feet (SCF)
What is the shape of natural gas?
Shapeless and lighter than air
At what specific gravity range is the Lee-Gonzalez-Eakin method applicable for most natural gases?
less than 0.77
What is the range of pressures used in the Lee-Gonzalez-Eakin correlation?
100 < p (psia) < 8000
What is the maximum deviation of the viscosity values predicted by the Lee-Gonzalez-Eakin method?
8.99%
What is the unit of temperature used in the Lee-Gonzalez-Eakin correlation?
°F
What is the parameter besides reservoir temperature and molecular weight of the gas used in the Lee-Gonzalez-Eakin method?
Gas density
What is the primary assumption about the volume of molecules in an ideal gas?
The volume of molecules is insignificant compared to the total volume occupied by the gas.
What is the equation of state that describes the PVT behavior of gases?
′ 𝑝𝑉 = 𝑛𝑅 𝑇
What is the term for the attractive or repulsive forces between molecules in an ideal gas?
No attractive or repulsive forces
What is the unit of measurement for the weight of gas in the equation 𝑚 𝑛= 𝑀?
Pounds
What are the standard conditions of temperature and pressure in natural gas calculations?
60°F and 14.7 psia
What is the term for the volume of gas occupied by 1 lb-mol of gas at standard conditions?
Standard volume
What is the unit of viscosity in which 1 poise is equal to 100?
centipoise
What are the factors that affect the viscosity of natural gas?
Temperature, pressure, and composition
What is the formula to calculate the viscosity of a natural gas mixture if the composition is known?
μg = σ μgi yi MWi / 1T2
What is the minimum mole percent of nonhydrocarbon gases that requires corrections to pseudo-critical properties?
5 mole percent
What is the purpose of the Carr-Kobayashi-Burrows Correlation Method?
To calculate the viscosity of natural gas at one atmosphere
What are the two popular methods used to calculate the viscosity of natural gas?
Carr-Kobayashi-Burrows and Lee-Gonzalez-Eakin Methods
Test your knowledge of natural gas properties, including ideal gas, real gas, gas deviation factor, and more. This quiz covers the fundamental properties of natural gas, its chemical reactions, and formation volume factor. It's perfect for chemical engineering students, especially those in Dr. Zulhelmi Amir's Kil4017 course at Universiti Malaya.
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