The density of mercury is 13.6 g/mL. What is the volume of a 155-gram sample of mercury?

You need to use the density formula. [latex] D = \frac{m}{V} [/latex]  [latex] DV = m [/latex] [latex] V = \frac{m}{D} [/latex] [latex] V = \frac{155gHg}{13.6\frac{g}{mL}Hg} [/latex] [latex] V = 11.397mL [/latex]