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2):    The denisty of toluene is 0.855 g/ml. what volume og toluene would have a mass of 15.00g. show the detailed calculation and appropiate set-up wherein the density value is used as a conversion factor?

I am allowed to work with someone ... Calculations : neatly labeled and organized for each of the following calculations Include correct and significant figures in all calculations Using the Graduated Cylinder Data from Part B. calculate the: 6. Percent error between the known density (from Data A) and the average experimental density (from Calc 4)

Plot 1/λ (y-axis) vs 1/n2 ( x-axis) for hydrogen and attach your graph to the back of this handout. Excel graphs are not permitted. Your graph should have: a titie, proper axis scaling, axes labelled including units, data points shown clearly eg. dot in a circle, best straight line drawn, and the coordinates (x,y) of the points on the straight line chosen to calculate the slope. Never use data points to calculate the slope! Show slope calculation directly on the graph. 3. a) From your graph, calculate the experimental value of R, the Rydberg constant. (Note - this is the absolute value of your slope): b) Based on the theoretical value of R,1.0974×107 m−1, calculate your % error:   information you need to solve this question: The picture is attached

Solve for the Number of moles of the unknown with the given data. I do not no the given substance

Smartwork5 Gen Chem X ttps://ncia.wwnorton.com/78450 SOUME E 02/02/21 2 Learning Objective: 1.J Set up dimensional analysis conversions. Question 1st attempt Do not include spaces in your answer. Fill in the appropriate unit conversions. (Report the molar mass of KCI using three sig. figs.) x x. =. | +, | log. cos. 8. mol 5.00 g KC1 1 mol KC1 100. mL 1L KC1 <13 pe here to search 99+ C F5 F3 F4 F6 F7 F8

2a. Volume in graduated cylinder , indirect method - volume of a 400mL Beaker(2 methods) measure in to the 10ths place. Fill#1/Fill#2/Fill#3/Fill#4/Fill#5/= Total Volume . 2b. Direct Method ( use formula for the volume of a cylinder):V=nr(2)h {show work} Radius/ height/ n-3.1415/ Volume (n r2 h)

I am allowed to work with someone I just don’t understand this ... Calculations : neatly labeled and organized for each of the following calculations Include correct and significant figures in all calculations Using the Graduated Cylinder Data from Part B. calculate the: 6. Percent error between the known density (from Data A) and the average experimental density (from Calc 4) .

A quia.com/quiz/7898892.html?AP_rand%3D1784472953 UIA FAQ About Log in Subscribe now 30-day free trial Home 201208 Assessment for Scoutlier Significant Figures Calculations Go to 1 - Not answered v Go stion 1 of 20 1. When expressed as 7.5x10^4, only the significant figures of are to.be considered. (1 point) O 7.5 7.05 O 7.005 O None of the, above Submit answer Skip for now Save progress or end quiz

I need help with run 2 the last three parts

1. The volume of a metal cylinder was measured indirectly by water displacement threetimes. The following volume readings were recorded. Using Equation 1 from the background section ( Volume of a Solid = Final Volume - Initial Volume ), determine the volume of the metal cylinder for each trial and then calculate the average volume of the metal cylinder.Note: Since the volume of a solid is being measured, use the unit cm3.*Recall that 1 mL = 1 cm3.   Problem #1 Initial Volume (cm^3) =7.6 Final Volume(cm^3)= 20.1 Cylinder Volume(cm^3)=?   Problem #2 Initial Volume (cm^3)=8.0 Final Volume (cm^3)=20.1 Cylinder Volume (cm^3)=?   Problem #3 Initial Volume (cm^3)=6.2 Final Volume (cm^3)=8.4 Cylinder Volume (cm^3)=?

A student collected the following data from their fuel in a lighter experiment.      Data Collected Trial # Molar Mass (g/mol) 1 64.688 2 63.171 3 63.396 What is their % error of their molar mass, assuming the gas was butane? (do not include units) (Trial data shown with extra sig figs)

PLEASE ANSWER ALL THE ITEMS. WILL GIVE YOU THUMBS UP AND GOOD RATING TRUE OR FALSE 1. The specific gravity bottle method can be used for both liquid and solid state. 2. The pycnometer method is the official USP method for determining specific gravity. 3. The density of water at 25 degrees Celsius is 0.9973 g/ml. 4. There are no limitations for miscibility.  5. Matter with a density close to zero will float. 6. Solutions are always clear, transparent and colorless. 7. Substances with a density lesser than 1 g/ml will sink. 8. The Westphal balance is more accurate than the specific gravity bottle method. 9. The buoyant force is less than the weight of the water displaced by the object. 10. All matter has a greater density than zero.  11. Molar concentrations are not temperature-dependent. 12. A substance heavier than water has lower specific gravity

what goes in the blue box

Ca  you please answer this in 10 minutes? pretty pleaaseee. Thank you ?

kindly calculate for the % error only 4 5 and 6

explain answer please for 4 & 5

Percentage of water and the average

One question with 4 parts

Enter the units of r  when the amount is measured in mol L-1 and time in min (use the backslash / but be sure to use () when more than one unit is is the denominator and a space or * to mean the product, for example: L/(mol s) or  L/(mol*s) or L/(s mol) or L/(s*mol) )

E ! G Google Docs: Online Document Editor | Google Workspace Hiranrat_Analysis_CHM235LL DO File Edit View Insert Format Tools Extensions Help A P 100% F1 C Pure A: Pure B: Pure C: Compound 2 F2 Normal text A 146 1 BO с O junk O Crude Fractions. The following table shows a sequence of TLC "lanes" that correspond to fractions collected from a column. After completing the column, a student wants to condense containers while maintaining high purity for each of the components, then what fractions, if any, can be combined to provide # 3 Y 1 2 80 F3 O Times New... Y - 11 + 213 Oo 3 2 0 0 0 0 0 0 0 $ 4 Last edit was 2 minutes ago B IU A UA 45 S Fractions from column 000 F4 6 docs.google.com Hiranrat Analysis_CHM235LL - Google Docs % 5 F5 6 O GOD O O 2 = 2 MacBook Air F6 & 7 6 E 7 F7 Solvent Front Starting Line T 8 DII IE = E 8 9 y DD C F9 pe

Are these corrects? If not please help

Name Date Period_ D4-DIMENSIONAL ANALYSIS HOMEWORK DIRECTIONS: Using the Conversion statements to the right, work the following conversion problems using the dimensional analysis, Show the entire solution on this paper and include the correct answer with units. Box in the final answer. Be sure to include and cross off all units and follow the significant figures rules. 1. Convert 2 ahah to eeps. 1 ahah = 2 nanas 10 eeps = 21ahah 3 nanas = 1 oops 4 oops = 5 eeps 4oops 5 eeps 2 ahah 2 nanas 1 1 ahah nanas I oops 2. Convert 10 e to AS 10 = 5,2A 63 O 72 a 3 9 = 2 ® 14 * = 22 O 3. Convert 42 G to A. 28 = 2 C 3C = 2A 16 G = 21D 26 F = 4G 13B = 7 D 4. Convert 17 So to Do 12 So = 2 La 1 Fa = 1 So 1 Re = 5 Do 1 Fa = 3 Me 12 Re = 25 Me

Question 2 of 21 Convert a speed of 245 cm/s to units of inches per minute. Also, show the unit analysis by dragging components into the unit-factor slots. in 245 cm min 1 s Answer Bank 3 ft 60 min 60 s 1ft 60 h 12 in 1 min 1 in 1h 2.54 cm Show All 2021 02_04 10 1.jpg chem20lec8hand.pdf a O Anticipation Gui.doc Module 3 MacBook Air F12 F10 FI F8 F7 吕口 F3 FS F2 * & #3 $4 % 8 9 3 4 5 P T Y E K D F G H V N B く6

Chemistry 310 Lab 3 – Measurements Name Report Sheet Part 1: Obtain mass of a liquid in a beaker using weighing by difference technique Trial 1 Trial 2 Trial 3 Mass of empty beaker Mass of beaker with water Mass of water Average: Show you calculation for average mass here:

I need help on this question could you use dimensional analysis please?

Please provide the right answers and the correct significant digits

3

Trial Mass (g) Volume initial (mL) Volume fınal (mL) 1 8.567 10.3 13.8 8.765 10.2 13.9 8.657 10.0 13.6 Calculate the average density (3 s.f.) in (g/mL) of her unknown solid. Average density (g/mL) =

A Homework and quiz in CHEM101 X Search results for 'A 185 ml sam X G filtration definition chemistry - G X + A learn.maricopa.edu/courses/1132256/modules/items/19018031 CHM151 17003 > Modules > Weeks 8 & 9 - Chapter 7 > Homework and quiz in CHEM101 - due Sunday night CG 2020 FALL CRED Question 30 of 30 Submit Account Home How many grams of AgCI will be formed when 60 mL of 0.500 MAGNOS is Announcements completely reacted according to the balanced chemical reaction: Dashboa |Modules rd FeCls(aq) + 3 AGNO:(aq)→ 3 AgCI(s) + Fe(NO:):(aq) Concourse Syllabus Courses Grades Cisco Webex Groups STARTING AMOUNT Tutoring/Learning Center Calendar ADD FACTOR ANSWER RESET Inbox *( ) History 143.32 12.9 169.88 60 0.500 4.30 0.001 1.43 Help • Previous Next » Library 4:24 PM O Type here to search 10/21/2020

(a) (b) 3. For each image below, record the volume with the correct significant figures. a. beaker b. volumetric flask C. buret d. volumetric pipet e. graduated cylinder -50 ml ±5% (c) M (d) (e) 50 ml 50 ml 40 30 -20 No. 1000 10 24 50 mL 25 50 mL 45 40 30 25 20 mL 10

4. Apply the real rule of significant figures to express the final result for each of the values given: (a) 0.250869 + 0.0018443 M KOH => (b) 5.7837 wt% = 0.0676 => (c) 15.04611 ± 0.035 mL =>

12. Calculate % difference using equation 2. Show set-up. |trail 1 density – trial 2 density 0.961-0.979 (2) % difference x100%= X 100% average denisty 0.97 cole nhw tobni % Difference:

Unit conversion challenge: A local water retention pond was found to have elevated mass concentration of mercury of 14 ng per liter. How many moles of mercury are contained in the entire volume of 1250 m3 of the water in the pond? Look up necessary conversion factors and other information online.