On a mission to a newly discovered planet, an astronaut finds gallium abundances of 60.11 % for 69Ga and 39.89 % for 71Ga. What is the atomic mass of gallium for this location

69.79

Explanation:

According to this question, Gallium element (Ga) has two isotopes namely: 69Ga and 71Ga respectively.

- Isotope 69Ga contains a percent abundance of 60.11 %, the decimal abundance= 0.6011

- Isotope 71Ga contains a percent abundance of 39.89 %, the decimal abundance = 0.3989

Atomic mass of Ga = (mass of isotope 1 × decimal abundance) + (mass of isotope 2 × decimal abundance)

Atomic mass of Ga = (0.6011 × 69) + (0.3989 × 71)

Atomic mass of Ga = 41.4759 + 28.3219

Atomic mass of Ga = 69.797

Atomic mass of Gallium = 69.79

answers: to make sure that all of the broken pieces of tablet were added to the water, to allow for fair comparison of all three trials, with different particle sizes to avoid experimental error

the answer is minerals.