About #8##mL#; the volume will vary slightly according to temperature.
Explanation:
The density of water, #rho, H_2O##=##1.00##g*mL^-1# at standard temperature. If we divide mass by density we get a result in volume: #(mass)/(density)#, i.e. #m/rho##=##(8.00*cancelg)/(1.00*cancelg*mL^-1)##=##8.00*(1/(mL))^-1##=##8.0*mL#.