Answer
0.167 M
Work Step by Step
Molarity=$ \frac{Number\,of\,moles\,of\,C_{6}H_{12}O_{6}}{Volume\, of\, solution\,in\,L}=\frac{\frac{Mass\,of\,C_{6}H_{12}O_{6}}{Molar\,mass}}{Volume\,of\, solution\,in\,L}$
$=\frac{\frac{15.0\,g}{180.g/mol}}{500.\times10^{-3}L}=0.167\,M$