Which answer would score higher? Not sure where to start? Explain this Answer A 6.0÷24=0.256.0 \div 24 = 0.256.0÷24=0.25 mol Mg. The 2:22:22:2 ratio gives 0.250.250.25 mol MgO, so the product mass is 0.25×40=10.00.25 \times 40 = 10.00.25×40=10.0 g. Answer B 6.0÷24=0.256.0 \div 24 = 0.256.0÷24=0.25 mol Mg. The oxygen coefficient doubles this to 0.500.500.50 mol MgO, so the product mass is 0.50×40=20.00.50 \times 40 = 20.00.50×40=20.0 g.