2. How many grams of O_(2) are in 3 moles o fO_(2) (Molar mass of O=16g/mol) A. 48 grams B. 96 grams C. 32 grams D. 64 grams

To determine the number of grams of \( O_2 \) in 3 moles, we need to use the molar mass of \( O_2 \).<br /><br />First, calculate the molar mass of \( O_2 \):<br />\[ \text{Molar mass of } O_2 = 2 \times 16 \, \text{} = 32 \, \text{g/mol} \]<br /><br />Next, use the molar mass to find the mass of 3 moles of \( O_2 \):<br />\[ \text{Mass} = \text{Number of moles} \times \text{Molar mass} \]<br />\[ \text{Mass} = 3 \, \text{moles} \times 32 \, \text{g/mol} = 96 \, \text{grams} \]<br /><br />Therefore, the correct answer is:<br />B. 96 grams