Final answer:
The molecular mass of a compound is calculated by summing the products of the average atomic mass and quantity of each element; CHCl3 has a molecular mass of 119.37 amu.
Step-by-step explanation:
The question involves calculating the molecular mass of a compound by summing the product of the average atomic mass and quantity of each element present in the compound. In the example provided, the molecular mass of a compound given as CHCl3 (chloroform) is calculated to be 119.37 amu, which is obtained by adding each element's subtotal (C: 12.01, H: 1.008, Cl: 106.35). The calculation is based on the provided average atomic masses (carbon: 12.01 amu, hydrogen: 1.008 amu, chlorine: 35.45 amu) and the quantity of each element in the molecule.
For other given molecular compositions, the molecular mass would be similarly calculated by multiplying the average atomic mass by the quantity of each element and summing the results. This is a fundamental concept in chemistry that allows for the determination of the molecular weight of compounds, which is crucial for quantitative analysis and stoichiometric calculations.