Lab 1- CHM2045L Tiffany F PDF
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Lab 1 – Iden+fica+on of Metals – Lab Report C H M 2 0 4 5 L - D r. Ya v u z Pe t r o w s k i The statement is: !
I cer/fy that this is my own work and I understand that if I am found to be in viola/on of the honor code, I will be subject to the highest penalty” Name: Tiffany Francois Znumber: Z23813167 PART I: 360 SIMULATION
Table 1. Determining the Densi/es.
Please complete data table by using 360 virtual lab simula+on. Only obser-
va+ons based on the 360 video results will be accepted as correct answer. Be sure to record your measurements with the appropriate number of significant figures. You must show all your calcula+ons to receive credit for them. You must type your answers for each sec+on. HandwriCen reports will not be accepted or will be graded with 4 points deduc/on. By using simula/on, record: a.
Mass of the unknown metal sample b.
Volume of the unknown metal Complete c.
Density calcula+on of the unknown metal d.
Plot excel graph to find the density e.
Calculate average density Data Points Collected
Unknown Metal #1
Unknown Metal #2
Unknown Metal #3
Unknown Metal #4
Mass of weighing dish, g
2.027g
2.019g
2.119g
1.953g
Mass of weighing dish and un-
known metal sample, g
4.524g
5.743g
9.821g
13.947g
Mass of unknown metal sample, g
2.223g
3.724 g 7.702g
11.994g
Volume of water, mL
5.00ml
5.00ml
5.00ml
5.00ml
Volume of water and metal, mL
5.32ml
5.48ml
6.00ml
6.6ml
Volume of unknown metal sample, mL
.32ml
.48ml
1.0ml
1.6ml
Calcula/ons :
YOU MUST SHOW ALL CALCULATIONS TO RECEIVE CREDIT FOR THEM ! Calcula+ons needs to be typed Proper use of significant figures and units is part of the grading. Mass g of the unknown metal 1: 4.25g-2.027g Calcula+on: 4.25g-2.027g= 2.223g (mass g of unknown metal 1) Mass g of unknown sample 2: 5.743g- 2.019g Calcula+on aeer subtrac+on: 3.724g (mass g of unknown metal 2) Mass g of unknown sample 3: 9.812g - 2.119g Calcula+on aeer subtrac+on: 7.702g Mass g of unknown sample 4: 13.947g-1.953g Calcula+on aeer subtrac+on: 11.994g CALCULATING DENSITY: D (p)= M/V Density of unknown metal 1: 2.223/.32= 6.94g/ml Density of unknown metal 2: 3.724/ .48= 7.75 g/ml Density of unknown metal 3: 7.702/ 1.0= 7.702 g/ml Density of unknown metal 4: 11.994/ 1.6= 7.49 g/ml Average density: Density of metal sample, g/mL
6.94 g.ml
7.75 g/ml
7.702 g/ml
7.49 g/ml
Average density value from calcu-
la+on (g/mL)
7.47g/ml
Density value from excel graph (g/
mL)
7.50g/ml
Iden+fy of Metal
Tin
Data Points Collected
Unknown Metal #1
Unknown Metal #2
Unknown Metal #3
Unknown Metal #4
Average = (Trial 1+Trial 2+Trial 3+Trial 4)/4=(6.94g/ml+7.75g/ml+7.702g/ml+7.49g/ml)/4 =7.47g/ml 360 Lab Graph Excel Graph
: Edit your graph so that it contains the correct formaing components – you need a descrip+ve +tle and labels for your x- and y-axes (don’t forget units!). Add screenshots of your Excel graph. Make sure the graph is correctly formaked and labeled. To add screenshot: a.
If you are on a Windows device, hold down (
Windows key
) + (
shiW
), then press (
s
). Use your mouse to draw a rectangle around your graph, then (
ctrl
) + (
v
) below to paste the image. b.
If you are on a Mac, hold down (
cmd
) + (
shiW
), then press (
4
). Use your mouse to draw a rectangle around your graph. The image should be saved as a file on your desktop. Click and drag it below to paste it into the document.
Your preview ends here
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PART II: Table 1. Determining the Densi/es.
Fill out the following table with your collected data. Your table should have 5 data entries for selected unknown metal. Be sure to record your measurements with the appropriate number of significant figures. Graduated Cylinder Used:
☐
10 mL ☐
25 mL ☐
50 mL
Unknown Metal:
☐
Metal 1 ☐
Metal 2 ☐
Metal 3
Data Points Collected
Unknown Metal #1
Unknown Met-
al #2
Unknown Met-
al #3
Mass of weighing dish, g
4.6497g
5.8778g
4.7698g
Mass of weighing dish and unknown metal sample, g
9.1543g
10.2754g
9.2056g
Mass of unknown metal sample, g
4.5046g
4.3976g
4.4358g
Volume of water, mL
5.00ml
5.00ml
5.00ml
Volume of water and metal, mL
5.57ml
5.51ml
5.53ml
Volume of unknown metal sample, mL
0.57ml
0.51ml
0.53ml
Density of metal sample, g/
mL
7.90g/ml
8.62g/ml
8.37g/ml
Average density value from calcula+on, g/mL
8.30g/ml
Density value from excel graph
8.796g/ml
Iden+ty of metal
Copper
Calculations/work: Calculations: you must show all calculations to receive credit for them! Calculations needs to be typed. Proper use of significant figures and units is part of the grading. Mass of the unknown metal sample Mass of the unknown metal sample=Mass of weighing dish and unknown sample –Mass of weighing dish Unkown metal #1 =9.1543g-4.6497g=4.5046g Unkown metal #2 =10.2754g-5.8778g=4.3976g Unkown metal #3 9.2056g-4.7698g=4.4358g Volume of the unknown metal sample Volume of unknown metal sample=Volume of metal +water –Volume of water unknown metal #1 5.57ml-5.00ml=0.57ml unknown metal #2 5.51ml-5.00ml=0.51ml unknown metal #3 5.53ml-5.00ml=0.53ml Density of the unknown metal Density =Mass of the unknown metal sample/Volume of unknown metal sample unknown metal #1 =4.5046g/0.57ml=7.90g/ml unknown metal #2 =4.3976g/0.51ml =8.62g/ml unknown metal #3 4.4358g/0.53ml =8.37g/ml Average density
Average = (Trial 1+Trial 2+Trial 3…….)/3 =(7.90g/ml+8.62g/ml+8.37g/ml)/5=8.30g/ml Chemcollec/ve Graph
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Excel Graph
: Edit your graph so that it contains the correct formaing components – you need a descrip+ve +tle and labels for your x- and y-axes (don’t forget units!). Add screenshots of your Excel graph. Make sure the graph is correctly formaked and labeled. To add screenshot: c.
If you are on a Windows device, hold down (
Windows key
) + (
shiW
), then press (
s
). Use your mouse to draw a rectangle around your graph, then (
ctrl
) + (
v
) below to paste the image. d.
If you are on a Mac, hold down (
cmd
) + (
shiW
), then press (
4
). Use your mouse to draw a rectangle around your graph. The image should be saved as a file on your desktop. Click and drag it below to paste it into the document.
PART III: COLLECTING INFORMATION USING THE “PERIODIC TABLE LIVE!” SOFTWARE 1.
Using the soeware collect the following informa+on about the metals. DISCUSSION QUESTIONS 1.
According to the results you have received from 360 Lab, which way turned out to be the most accurate to deter-
mine the density of the metal, calcula+on from a single data point, or the computer created graph? What do you think, why? The most accurate way to evaluate the density of metal was the plocng of a graph .This is because a graph yields an exact value unlike calcula/ons which lead to uncertain/es as a result of calcula/on errors. 2.
When you placed the metal in the graduated cylinder containing water, the metal sank. What did this tell you about the metal? This suggested that the density of metal is greater than that of water. 3.
If you had used a different amount (mass) of your unknown metal, would the density you obtained be the same or different? Explain. If a different mass of the same unknown metal was used, the density obtained would be the same, provided the volume measurement is accurate. The density of a substance is an intrinsic property that remains constant regardless of the sample size or mass used in the calculation. NAME OF METAL
DENSITY (g/mL)
Copper
8.96
Silver
10.49
Aluminum
2.70
Platinum
21.45
Zinc
7.14
Rhodium
12.45
Tin
7.31
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- Home Conte Meas Take G Three Pears Maste G 4.988 Ta X G Three G Three D Spani -> A dmacc.blackboard.com/webapps/assessment/take/launch.jsp?course_assessment_id%= 402371 1&course_id%3 94346 18&ne pps Work for students... O New Tab M Gmail O YouTube A Maps G7 Translate CHM * Question Completion Status: QUESTION 2 Three separate lab groups determined the density of a metal to be 12.5 g/mL, 13.1 g/mL and 14.8 g/mL. Use these values to calculate the average density among the measurements. O A. 13.5 g/mL O B. 30.5 g/mL ОС. 13.1 g/mL O D. 10.1 g/mL QUESTION 3 Three senarate lah grouns determined the density of a metal to be 12.5 g/mL, 13.1 g/mL and 14.8 g/mL. If the accepted dearrow_forwardM Inbox ( x Precalc X A HOLID X Oluwa X Good ь Chemi X A fake X G spiral G the sar X X Micros X https://papers.xtremepape.rs/CAIE/IGCSE/Chemistry%20(0620)/0620_s05_qp_6.pdf The same mass of zinc was used each time. The volume of acid used was different each time. Use the syringe diagrams to record the volume of hydrogen produced each time in the table. Table of results volume of sulphuric acid/cm volume of syringe diagram hydrogen/cm3 10 20 30 40 50 60 70 80 10 20 30 40 50 60 70 80 15 10 20 30 40 50 60 70 80 20 10 20 30 40 50 60 70 80 25 10 20 30 40 50 60 70 80 30 10 20 30 40 50 60 70 80 10 20 30 40 50 60 70 80 35 40 10 20 30 40 50 60 70 80 ENG 23:09 O Type here to search 27°C US 21/04/2022arrow_forwardAaBbCcDd AaBbCcDd AaBbC AaBbCct AaB AaBbCcD 1 Normal 1 No Spac... Heading 1 Heading 2 Title Subtitle 1 Styles Name HHHHH ||||| H-C-C=C-C-C-H | H || HH Name H H-C-H C=C F -H —H H C 1 B. H H Name H H H H1C C H Η Η Η Η Η Η | | | | | | H-C₁-C₂-C₂-C-C-C-H II HH H H-C-H H -H y Find ✓ Replace Select Editing 14°C Cloudy A Dictate Voice F Fooarrow_forward
- 3. A method of analysis yields masses of gold that are low by 0.4 mg. Calculate the percent relative error caused by this result if the mass of gold in the sample is a. 500 mg b. 250 mg c. 60 mg 4. The method described above is to be used for the analysis of ores that assay about 1.2% gold. What minimum sample mass should be taken if the relative error resulting from a 0.4-mg loss is not to exceed a. -0.1% b. -0.8%arrow_forward9. r. S. H₂CRO4 A d= & OH NO₂ H₂ Pd/C NO₂ 6 = iq= HNO3 H₂, Pd/C H₂SO4arrow_forwardWhat is number 5?arrow_forward
- ALEKS - Kaîtlin Wo`x C Solved: Safari Filex Bb WS 2.3 - KEY.pdf x G how many kg are E A www-awn.aleks.com/alekscgi/x/lsl.exe/1o_u-IgNslkr7j8P3jH-IBMBkpcnaFu0F7UjsroJM pps Apple Focus2 Dashboard O GRLContent A ALEKS -- Asses... I Real-Time Lab Us... O MEASUREMENT Setting up a one-step unit conversion A student sets up the following equation to convert a measurement. (The ? stands for a number the student is going to calculate.) Fill in the missing part of this equation. g 85. g cm m Check Explanationarrow_forwardd' II ALEKS- Courtney Wh x New Tab X Lab 11-Atomic Finge G pericdic table-Goog x ALEKS rate Ex X lab 10 empirical form www.awu.aleks.com/alekscgi/x/lsl.exe/1o_u-lgNslkr7j8P3jH-lijulplKKWv4bwenmyrLYoBHbAAsJtmzj53GErnx_viTdHbIGMF9jvgkSu_nrizREmdQXHPJbMzq0mOrXJcuonZITQhB66q?1oBw7QYjb Courtne 45 O CHEMICAL REACTIONS Theoretical yield of chemical reactions reacts with gaseous oxygen gas (0,) to produce gaseous carbon dioxide (CO,) and gaseous water (H,0). What is the (CH,(CH.),CH) Gaseous butane theoretical yield of carbon dioxide formed from the reaction of 5.81 g of butane and 28.5 g of oxygen gas? Be sure your answer has the correct number of significant digits in it. Terms of Use Privacy Center Accessibility ©2022 McGraw Hill LLC. All Rights Reserved. Check Explanation 1I0 -> $4 4. 8. 23 51 3. k 00 S a. u q ctrl 145 altarrow_forwarda W Re Os Ir Pt Au Hg Tl Pb Bi Po At Rn 30.9 183.9 186.2 190.2 190.2 195.1 197.0 200.5 204.4 207.2 209.0 (210) (210) (222) 05 106 107 108 109 110 111 112 114 116 118 Ob Sg Bh Hs Mt Ds Uuu Uub 260) (263) (262) (265) (266) (271) (272) (277) (296) (298) (7) 60 61 62 63 64 65 66 67 68 69 70 71 Nd Pm Sm Eu Gd Tb Dy Ho Er Tm Yb Lu 44.2 (147) 150.4 152.0 157.3 158.9 162.5 164.9 92 93 94 95 96 97 98 99 100 101 167.3 168.9 173.0 175.0 102 103 U Np Pu Am Cm Bk Cf F Es Fm Md No Lr 238) (237) (242) (243) (247) (247) (249) (254) (253) (256) (254) (257) sogna pee ou cacau pe busca o cus £(H၁)၁၀- шогеш аз моц моцѕ 01 смоле рәліп əsənу sәне иo pǝseq pod еш әсхә пол t be a part by a padd a test so be aarrow_forward
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