Part I: Density of Unknown Liquid

Trial $1$ Trial $2$ Trial $3$

Mass of empty $10$ mL graduated cylinder $($grams$)26\mathrm{.}426\mathrm{.}927$

Volume of liquid $($milliliters$)8\mathrm{.}88\mathrm{.}58\mathrm{.}7$

Mass of graduated cylinder and liquid $($grams$)38\mathrm{.}138\mathrm{.}137\mathrm{.}6$ o Trial $1$: dl$1=$ ml$1/$ Vl$1=11\mathrm{.}7$g $/8\mathrm{.}8$ml $=0\mathrm{.}233$g$/$ml

o Trial $2$: dl$2=$ ml$2/$ Vl$2=11\mathrm{.}2$g $/8\mathrm{.}5$ml $=0\mathrm{.}224$g$/$ml

o Trial $3$: dl$3=$ ml$3/$ Vl$3=10\mathrm{.}6$g $/8\mathrm{.}7$ml $=0\mathrm{.}211$g$/$ml Part II: Density of Irregular$-$Shaped Solid

Trial $1$ Trial $2$ Trial $3$

Mass of solid $($grams$)43\mathrm{.}439\mathrm{.}940\mathrm{.}8$

Volume of water $($milliliters$)50\mathrm{.}15050\mathrm{.}2$

Volume of water and solid $($milliliters$)50\mathrm{.}650\mathrm{.}550\mathrm{.}7$ o Trial $1$: ds$1=$ ms$1/$ Vs$1=43\mathrm{.}4$g $/0\mathrm{.}5$ml $=86\mathrm{.}8$g$/$ml

o Trial $2$: ds$2=$ ms$2/$ Vs$2=39\mathrm{.}9$g $/0\mathrm{.}5$ml $=79\mathrm{.}8$g$/$ml

o Trial $3$: ds$3=$ ms$3/$ Vs$3=40\mathrm{.}8$g $/0\mathrm{.}5$ml $=81\mathrm{.}6$g$/$ml $1.$ How would you determine the proper number of significant figures for the measurement of a liquid using a graduated cylinder?

$2.$ Can just one measurement be considered precise? Can just one measurement be considered accurate? Explain your answers completely.

$3.$ For a boat to float on water, it must have a density lower than the density of water. Compare the densities of your unknown liquid and solid. If a boat was made of the unknown solid, would it float on the unknown liquid? Explain your answer.