Question
Aspirin's key constituent is acetylsalicylic acid, or C_(9)H_(8)O_(4) How many grams does 0.209 mol of acetylsalicylic acid contain?
Answer
4.6
(287 Votes)
Kristina
Elite · Tutor for 8 years
Answer
1. Calculate the molar mass of
: - Carbon (C): 12.01 g/mol × 9 = 108.09 g/mol - Hydrogen (H): 1.01 g/mol × 8 = 8.08 g/mol - Oxygen (O): 16.00 g/mol × 4 = 64.00 g/mol - Total molar mass = 108.09 + 8.08 + 64.00 = 180.17 g/mol2. Calculate the mass of 0.209 mol of
: - Mass = molar mass × number of moles - Mass = 180.17 g/mol × 0.209 mol = 37.65 gTherefore, 0.209 mol of acetylsalicylic acid contains 37.65 grams.
Explanation
To find the mass of 0.209 mol of acetylsalicylic acid (
), we need to use the molar mass of the compound. The molar mass is calculated by summing the atomic masses of all the atoms in the formula.