Final answer:
To find the volume of 0.794 moles of SO2 gas at STP, multiply the number of moles by the molar volume of 22.4 liters/mol. The result is 17.78 liters, therefore the answer is A) 17.79 liters.
Step-by-step explanation:
To determine the volume of 0.794 moles of SO2 gas at Standard Temperature and Pressure (STP), we use the concept of molar volume. The molar volume is the volume occupied by one mole of any gas at STP and is equal to 22.4 liters. By multiplying the number of moles by the molar volume, we can find the total volume of the gas.
The calculation is as follows:
Number of moles of SO2 gas = 0.794 moles
Molar volume at STP = 22.4 liters/mol
Total volume = number of moles × molar volume
Total volume = 0.794 moles × 22.4 liters/mol
Total volume = 17.78 liters (rounded to two decimal places)
Therefore, the correct answer is A) 17.79 liters.
To convert moles of gas to liters at STP, we can use the molar volume of a gas at STP, which is 22.4 L/mol. In this case, we are given 0.794 moles of SO2 gas at STP.
To find the volume in liters, we can use the following conversion:
0.794 mol x (22.4 L/mol) = 17.79 L
Therefore, there are 17.79 liters of SO2 gas at STP.