Final answer:
A. 7-10 inches of water column, 11-14 inches of water column
The standard pressure for natural gas is 7-10 inches of water column, and for LP gas, it is 11-14 inches of water column. These pressures are crucial for the safe and efficient operation of gas-burning appliances.
Step-by-step explanation:
The desired gas pressures for natural gas and LP (liquefied petroleum) gas are different due to the specific properties of each gas. For natural gas, the standard pressure is 7-10 inches of water column, whereas for LP gas, the standard pressure is 11-14 inches of water column.
This measurement, the water column, is a common unit of pressure measurement in the gas industry that indicates the pressure exerted by a column of water of a specific height at a given temperature.
The gas pressure affects the efficiency and safety of gas-burning appliances, making it essential for these values to be accurate and adhered to for proper operation.