Final answer:
The question appears to mistake molar mass multiplication for addition. When adding, results must match the decimal places of the least precise term. The question involves Mathematics and aligns with High School level content.
Step-by-step explanation:
The correct answer to the mathematical problem involving several molar masses is obtained by first understanding that when performing addition and subtraction, the result must be reported with the same number of decimal places as the term with the least number of decimal places.
Specifically, 342.3 g/mol × 180.16 g/mol is a multiplication problem that needs to be addressed separately; the correct approach is to follow proper significant figures and decimal places rules after obtaining the product.
However, as there seems to be a mistake in the original question since molar masses cannot be multiplied and instead should be added or subtracted when combining substances, let's first clarify and correct the question.
If we assume the intention was to add the molar masses, not multiply them, we would proceed by adding the given molar masses: 360.31 g/mol + 61.83 g/mol + 159.609 g/mol + 110.98 g/mol + 58.44 g/mol + 61.83 g/mol + 125.4 g/mol + 180 g/mol.
The correct sequence is to perform the addition and then round the result to the least number of decimal places from the numbers involved in the calculation. This method reflects the certainty of each of the measured values that contribute to the sum. Therefore, this solution would ensure that the answer correctly represents the precision allowed by the decimal places of each molar mass.