How many moles are in 15.0 g AsH_(3) 1200 2.3 0.19 5.2 0.44

To determine the number of moles in 15.0 g of , we need to use the molar mass of .The molar mass of is calculated as follows:- Arsenic (As) has a molar mass of approximately 74.92 g/mol.- Hydrogen (H) has a molar mass of approximately 1.01 g/mol.Since has one arsenic atom and three hydrogen atoms, its molar mass is: Now, we can calculate the number of moles in 15.0 g of using the formula: Substituting the given values: Therefore, the correct answer is 0.19 moles.