Lab 6

Pre-Laboratory Assignment Name _%_EA\;{_C&(:[-_‘&)___ Lab Exercise 6: Liquid Density and Molarity Lab Section ¢\ Pre-Laboratory Questions Answer the following questions accurately using full sentences. 1. Why do you need to know and record the temperature of the water in Activity 1? TIX s ampotiony X0 Vanows and Tecord dne \-cx\f\?ao\-urc OF Mae W oXEL, VECOSDR Yae *em\;mwre \m\-xyo‘;-z Moe gecS ™. For @xonnp\s, e c%)oo«w\e:\ W;“:uu\o:; ~roxe ~ e Op. ber ; TS s \:ocmt?_ (e o\, Yee remgermtuce iedS o 2. Explain why the density unit of g/cm? is quivalent to g/mL. " e derSiy Omk of Afcen S GOUNONAY YO o/l pecouse Vel T\ cow 3. Explain the purpose of the calibration graph. T O CONOONON acogh (,a‘ooi*- S Ragv ol Yook e Yoo CoNDOXNON CocNe. e CoXdorodon CoNT Yo oy . : \'\C\{ e osed\ YO \oen \sdw\'(-o\\_\o(\ OQ o u(\\h( ch(\ 601081'0"‘03'- Lab 6: Measurements of Liquid Density and Molarity o

4. Look at the graph below and state in words the relationship between the applied force and the voltage experienced by the system. Visually interpolate to determine the approximate voltage when a force of 160 Ibs is applied. What is the approximate applied force if the system exhibits a voltage of 0.75 units? How could these values be determined exactly? Load Cell Calibration Curve 35 3 ’ y =0.0118*x + 0.1833 25 - . % 15 > ) N ! ' 4 0s 7./ X 2 0 50 100 150 200 ’ 250 300 Applied Force (Ib.) | Source: hltD1//WWW.rflakka—mcketll'y.net/strainlc.htn-n PSS xne oV TS Coce. \nCelRosSeES, 5o d:cg *:(\ei \g’\\*%c, BRSOl Ondes o ESSITVE CertrIoNon. QL@ ;W:\ \1.'3 . e Bes oG ote w ok \LON\GS, Ve 0_\,\:0%&«\ — 20 VNS, The QQQroxfch\—:t oghied oxte [ WS AS S o O e o ALOON TN\ T NaeSe. Nalues e, e €\ N o \@3z3 Cn Ve OUSeok- | 5. The volumetric pipet you sign out from your TA may be marked with “TD +0.04mL" or “TD 20°C +0.04mL". Explain this notation that might be found near the top of the pipet stem. Explain why the last drop is not blown out of the pipet. ) Ths r\g)\oéc'\of\ AtonShedes YOX Ve piper Nad veen L Colomded AO’C LOWN ¥R oRFewnce \evel of »o0.0 \_m\. Ve COMIOR Volume YO e aWN\ereh . The Colbrodion O(:;. Xee peX YOED \NYO O LA ON e, go(((:c:;f C:-U\%‘or\ :aroe.\? Cowrse €ome. ofF Ane \'\o.\u\& ’VS mmooo* C;i - woex . The \oex el 'S no N \*\\\ :TQ e)*:\ e\oe?c:»ee W coouId enpoex e NOVWOM e ex , M.‘nc> \¥ \o Yo .\‘\m(CCC,*r. Lab 6: Measurements of Liquid Density and Molarity -