Refer to the following unbalanced equation:
C6H14 + O2 CO2 + H₂O
What mass of oxygen (O2) is required to react
completely with 21.5 g of C6H14?
O 6.54 × 103 g
O 37.9 g
O 7.98 g
O 75.8 g
O 0.250 g