Determain the molecular mass of T2 ^17O2. Explain answer to me because I have a lot of questions like this

The question deals with isotopes and how their masses differ from their normal elemental counterparts.

Here, T represents tritium, which is an isotope of hydrogen with a mass of 3 amu. Similarly, the isotope of oxygen present is ¹⁷O, which means it has a mass of 17 amu.

To determine the mass of this molecule, we do the following calculation:

3 * 2 + 17 * 2

6 + 34

40

The mass of T₂¹⁷O₂ is 40 amu