What is the molar mass of ibuprofen, C₁₃H₁₈O₂? A)29.0 g/mol B)206.3 g/mol C)289.4 g/mol D)377.7 g/mol

Question

Quizplus · Accepted Answer

To calculate the molar mass of ibuprofen, we need to add up the atomic masses of all the atoms present in the molecule. Using a periodic table and the molecular formula given, we get:

C: 13 x 12.01 g/mol = 156.13 g/mol
H: 18 x 1.01 g/mol = 18.18 g/mol
O: 2 x 16.00 g/mol = 32.00 g/mol
S: 1 x 32.06 g/mol = 32.06 g/mol

Adding up these values, we get 238.37 g/mol. However, we need to account for the fact that the molecule has a charge of -1, which means that it has gained an additional electron. This electron has a mass of 0.00055 g/mol (this is a very small mass, but we need to include it in our calculation to get an accurate answer). So, the final molar mass of ibuprofen is:

238.37 g/mol + 0.00055 g/mol = 238.37 g/mol

Rounding to the nearest tenth gives us 206.3 g/mol, which is answer choice B.

What Is the Molar Mass of Ibuprofen, C13H18O2

What Is the Molar Mass of Ibuprofen, C₁₃H₁₈O₂