What is the specific gravity value of natural gas as given in the material?

What is the specific gravity value of natural gas as given in the material?

• A. 0.55
• B. 0.50
• C. 0.60
• D. 0.65

Answer: (A)

Specific gravity compares a gas’s density to the density of air at the same conditions, and it’s a dimensionless way to say how heavy or light a gas is relative to air. Natural gas is lighter than air, so its specific gravity is a value less than 1. In this material, the value given for natural gas is 0.55, which is the number used for calculations and comparisons in that content. That choice fits the concept that natural gas is lighter than air and sits at that relatively low density ratio, whereas other numbers would indicate different densities and aren’t the figures used in this material.

Specific gravity compares a gas’s density to the density of air at the same conditions, and it’s a dimensionless way to say how heavy or light a gas is relative to air. Natural gas is lighter than air, so its specific gravity is a value less than 1. In this material, the value given for natural gas is 0.55, which is the number used for calculations and comparisons in that content. That choice fits the concept that natural gas is lighter than air and sits at that relatively low density ratio, whereas other numbers would indicate different densities and aren’t the figures used in this material.