Work questions $3$ and $4$ in groups and then discuss results as a class.

A clean, dry, empty Erlenmeyer flask weighs $93\mathrm{.}432g.$ To the flask, a student adds $20\mathrm{.}00$

$mL$ of deionized water that she measured using a graduated cylinder. The Erlenmeyer flask

plus the $20\mathrm{.}00mL$ portion of water weighs $113\mathrm{.}311g.$ The temperature of the water was $24$

$C.$ The density of water at $24C$ is $0\mathrm{.}997296\frac{g}{m}L.$

a$)$ What is the calculated $($experimental$)$ volume of the water?

b$)$ Calculate the $\%$ error in the calculated volume.

Three students in lab each weighed the same sample three different times. Their data is

shown in the table below. The true $($actual$)$ mass of the sample was $8\mathrm{.}72g.$

a$)$ Calculate the average mass $(\stackrel{}{x}),$ the mean average deviation $($MAD$),$ and the average

percent error for each student's set of data.

b$)$ Which student's results are the most precise? Which result supports this claim?

c$)$ Which student had the most accurate set of data? Which result supports this claim?