Final answer:
The partial pressure of propane gas in a sample of natural gas with a total pressure of 971 mm Hg and 5% propane is 48.55 mm Hg.
Step-by-step explanation:
To find the partial pressure of the propane in a sample of natural gas, we can use Dalton's Law of Partial Pressures, which states that the total pressure of a mixture of gases is equal to the sum of the partial pressures of each individual component in the gas mixture. Given that the total pressure of the natural gas is 971 mm Hg and the percentage of propane is 5%, we can calculate the partial pressure of propane as follows:
Total pressure of natural gas × Percentage of propane = Partial pressure of propane
971 mm Hg × 0.05 = 48.55 mm Hg
Therefore, the partial pressure of the propane gas is 48.55 mm Hg.