Final answer:
Without the balanced chemical equation for the reaction of trimethylgallium with arsine, we cannot determine the mass of GaAs that could be produced.
Step-by-step explanation:
To determine what mass of GaAs could be produced when 150 g of trimethylgallium reacts with 100 g of arsine, we need to use stoichiometry based on the balanced chemical equation for the reaction.
However, since the equation is not provided, we can't perform the necessary calculations. If we had the equation, we would calculate the moles of each reactant, determine the limiting reagent, and use it to calculate the mass of GaAs that could be produced.
The answer would be the theoretical yield of GaAs, which would be the mass of the limiting reagent converted into GaAs through the molar ratios of the balanced equation.