PLS HELP MULTIPLE CHOICE!!!
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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?

37.9 g
6.54 × 10³ g
75.8 g 7.98 g
0.250 g​