## Chemistry: A Molecular Approach (3rd Edition)

$C_{8}H_{18}$
Calculate the molar mass of the empirical formula by adding the molar masses of its constituent elements together. $4(12.01)+9(1.01)= 57.13$ Divide the molar mass given by this number and round to the nearest whole number (it should be really close). $\frac{114.22}{57.13}=2$ Multiply the Empirical formula by this number to get the molecular formula. $2(C_{4}H_{9})=C_{8}H_{18}$