6. 取 \(50.0\mathrm{mL}\) 、 \(0.100\mathrm{M}\) HCl稀釋至 \(500~\mathrm{mL}\) ,稀釋後濃度為何?(A)0.00100M(B)0.0100M(C)0.0500M(D)1.00M