Final answer:
The mass of the Molecular Ion (M+) is found using mass spectrometry and corresponds to the second-to-last peak on a mass spectrum. Without the specific mass spectrum data, the exact mass cannot be provided, but the given molecular weight near a typical peak could be 176.124 g/mol.
Step-by-step explanation:
The mass of the Molecular Ion (M+) can be determined through mass spectrometry, where it corresponds to the peak that appears just before the highest m/z (mass-to-charge ratio) value on a mass spectrum, which represents the molecular weight of the compound in question. The exact mass for M+ is not provided in the question, but it is indicated that the second-to-last peak on the right-hand side of the mass spectrum is the molecular ion peak. The given molecular weight close to a typical molecular ion peak could be 176.124 g/mol, but without the specific mass spectrum data, the exact answer cannot be confirmed. However, it's important to remember that the molar mass reflects the mass of Avogadro's number (6.022 × 10²23) of molecules, not just one. The molecular ion (M+) in mass spectrometry represents a molecule that has been ionized and typically has lost one electron, giving it a charge of +1, making the m/z ratio equal to the molecular mass of the compound.