Lab 1 REMOTE Measurement, Instrumentation and Flame Test (1)

v Question Completion Status: Show your work on a sheet of paper. Using multi-step dimensional analysis as shown in lecture, perform the following conversion. Be sure to give your answer to the correct number of significant figures. No credit will be given if the dimensional analysis set up is not shown. Full credit is based upon the correct set up as well as the correct answer. You can earn partial credit for this problem. Aside from the ones you need to know by heart, you must use PER expressions from the provided table. (All 6 of the PER expressions in the bottom half of the table are exact.) QUESTION 22 Convert 2.117 x 10-7 mi2 to in?. Ans = ? in2 (Do not give the units in your answer.) VOLUME LENGTH MASS 1 L 1.057 qt 28.35 g 2.205 lbs %3D 1 km 0.6214 mi 1 oz %3D 1 kg 1 mi = 5280 ft 12 in = 1 ft 2 pt 4 qt 2000 lb 1qt 1 gal I ton = 1 lb = 16 oz %3D exact exact exact Click Save and Submit to save and submit. Click Save All Answers to save all answers. DELL

Based on the information given, identify the most significant error in the preparation of Graph 2.     A)  The title appears in a font which is too small.   B)  The best-fit line does not intersect any data point.   C)  There is wasted space on the graph.   D)  The x-axis scale divisions are uneven.

Density Lab (Need help plotting this graph) How to plot this graph from the data sheet (see picture attached) with mass of solution (on y-axis) vs volume of solution (on x-axis) for the 0%, 10%, 20%, 30%, 40%, 50%, 60% sucrose solutions so that it is all on one graph? There should be seven sets of data with seven best-fit lines on one graph. The y-intercept of the best-fit line is set to 0. Please include how to setup the data in excel spreadsheet to plot the graph. Thank you

Specific protocol should be followed any time a balance is used to weigh the mass of a chemical or object. Select which rule(s) are part of this protocol. All of these rules are part of the protocol. Glassware, containers, and chemicals should be at room temperature. The same balance should be used throughout an experiment. Glassware must be dried thoroughly before being weighed and all chemicals should be contained in either a piece of glassware or weighboat. All chemicals should be contained in either a piece of glassware or weighboat. Filter paper must be completely dry, even after being used in an experiment. Glassware must be dried thoroughly before being weighed.

help me solve this please

SHOW WORK. DON'T GIVE Ai generated solution

Can you help me answer this questions 4 and 5, this is from the previous question I just split my question, thanks

Please help with 4-7

A student takes the following steps during an experiment: Measure 15mL concentrated HCl (student uses a 50mL graduated cylinder) Weigh -4.0 grams of tert-butyl chloride (student weighs in a 25 mL beaker on balance #3) Transfer HCl and tert-butly chloride to a 125mL separatory funnel (student pours both liquids from their containers in to the funnel) Swirl the sep funnel for 5 minutes, shake and vent for 15 minutes (student shakes and vents as directed) Place the funnel in the ring support and allow layers to separate (student waits, sees a few bubbles in the layers, decides to continue) Drain the lower layer to waste, drain and dry the top layer with CaCl2  (student collects top layer in a small clean beaker and adds CaCl2 to dry) Gravity filter through fluted filter paper into a clean beaker of known mass (student filters as directed)  When the student calculates the % yield from the reaction, it is a disappointing 22%.   List at least 5 specific sources of error that may have…

Hello, I need help with sigfigs and scientific notation. I am a lil confused on problems like 3.456/1.3e3 and on problems like 0.1765/(10.32-9.5)I have no clue if what I am doing is correct and I feel like I am reallt just over thinking this. Any tips and tricks you could give in this area would be amazing and greatly appreatied. thanks

The experiment involves diluting a 16% sugar solution, prepared by dissolving 16 g of sugar in 100 mL  water.  Three different solutions are prepared by mixing the 16% sugar solution with various volumes of water.Make appropriate choices from the dropdowns.  Work from left to right.  Each answer can be calculated from numbers to the left of it in the row. The objective is to calculate the number in the right-hand most column in each row (% sugar in the solution). 16% sugar solution taken / mL water added/ mL diluted solution / mL Dilutionfactor % sugarin diluted solution 25 25                             [ Select right answer]                          ["50", "25", "100", "150"]                                        [ Select right answer]                          ["1", "0.5", "2"]                                        [ Select right answer]                          ["8", "50", "12.5", "25"]            25 8.3                             [ Select right answer]…

Using the following mass standard data, calculate the Rx value. mass of mass of area of area of isopentyl acetate (g) isopentyl alcohol (g) isopentyl acetate peak isopentyl alcohol peak 80.0 1.10 1.28 189 Please report your answer to 3 decimal places. (No units required)

The concentrations of K* in water were measured with atomic absorption spectroscopy (AAS) and atomic emission spectroscopy (AES). Four water samples obtained at different cities were used, and each sample was measured one time. The measurements are shown in the table below: Tulare Clovis 8.9 ppm 6.7 ppm 7.0 ppm 5.0 ppm What is the calculated t-value (tcalculated) for the statistical comparison of these two methods? AAS AES 1.908 2.664 2.309 2.938 3.012 Fresno 5.5 ppm 5.4 ppm Selma 12.5 ppm 9.8 ppm

Why should the selected rule(s) be followed? A residue left on the balance will contaminate the balance pan surface and anything that comes into contact with it afterwards. There may be discrepancies in accuracy between individual balances. Objects at any temperature other than room temperature can create air currents which can affect the balance pan, causing the measured mass to be higher or lower than the true mass. Weighing wet items will cause the displayed mass to be greater than the actual mass of the object.

PLEASE I REALLY NEED HELP WITH THESE QUESTIONS!!!

Explain in WORDS how you would teach him to determine if his dimensional analysis makes sense. Solving would just be your evidence. Note: Explain a dimensional analysis. Conversion factors must cancel out to get an answer. You must use the correct units in order for the factors to cancel out.

3500 nm isn't an option.

For liquid B, you decide to use a 50 mL burette to once again dispense 5.00 mL of liquid B into a convenient container.  You find that the empty container has a mass as 3.05 grams.  After obtaining the mass of the empty container you place it beneath the burette and open the stopcock valve.  Although you try to stop the flow of liquid B at exactly the 5.00 mL mark you overshoot slightly and end up dispensing 5.14 mL. What  is  the  mass  of  liquid-B  that  was  dispensed  if  you  continue  with  the  density determination for liquid B and find that the mass of the container plus the 5.14-mL of liquid B is 7.63-grams?

For liquid B, you decide to use a 50 mL burette to once again dispense 5.00 mL of liquid B into a convenient container.  You find that the empty container has a mass as 3.05 grams.  After obtaining the mass of the empty container you place it beneath the burette and open the stopcock valve.  Although you try to stop the flow of liquid B at exactly the 5.00 mL mark you overshoot slightly and end up dispensing 5.14 mL. Can you still proceed with the density determination for liquid-B or do you have to start over and get exactly 5.00 mL? Explain.

For liquid B, you decide to use a 50 mL burette to once again dispense 5.00 mL of liquid B into a convenient container.  You find that the empty container has a mass as 3.05 grams.  After obtaining the mass of the empty container you place it beneath the burette and open the stopcock valve.  Although you try to stop the flow of liquid B at exactly the 5.00 mL mark you overshoot slightly and end up dispensing 5.14 mL. What is the density of liquid B in terms of g/mL?

Please answer both questions.

Please answer question number 1 correctly with the correct answer. there is a picture of an example of a ''Dimensional analysis Format' below. please write out all work showing the math in dimensional analysis format. Question 1: What is molar mass of Sucrose C12H22O11.

Pls help me I'm just grade 6 please answer the questions shortly and concise thank u experts love ❤️

How many pounds (lbs) does 5 gallons of salt water weigh? Assume the salt water has a density of 1.03grams/mL. Using the dimensional analysis method show your process/setup.

how do i know if my measurement is significantly different from the exact value, at least 2 sentences. exact value was 0.25 the average was 0.223 and standard deviation was 0.025. the RSD was 11.2%

2. Using Excel, make a graph of the following data. Plot Mass vs. Volume for the following data on the same graph. Use a linear fit of each set of data and include the equation of the best fit line (2 fits and 2 equations, making sure you can tell which equation is for which set of data). Submit your graph and answer the three questions below. Volume (ml) 5.00 10.00 15.00 20.00 30.00 Mass of Al (g) 43.195 56.053 70.961 82.499 108.988 Mass of Zr (g) 63.797 94.708 127.933 158.580 227.037 For both straight lines, the slope is essentially equal to the density of the element. The y-intercept is equal to the mass of the beaker that held the substance. Answer the following questions. a) For each element, what is the density (slope)? What is the mass of the beaker (y-intercept)? Be sure to include units. b) If you have 120.000 g of Al and beaker, what is the volume? 21.⁰ c) When the volume of Zr is 25.00 mL, what is the mass?

The gold content of an ore is being measured. The results of these analyses are:  Content (ppt) 20.065 19.999 21.054 20.533 20.088 20.112 What is the average value, standard deviation and confidence interval for this set of data?Show each step of the calculation. Using your results calculate the %accuracy and %precision (relative standard deviation) if the true value is 20.045%.

Can someone please help me fill this graph out and answer the 4 questions on the bottom thank you very much.

STANDARDS STD#1 STD#2 STD#3 STD#4 STD#5 1.5- 1.0- 0.5 0.0 Caffeine Aspartame Benzoate 50 100 150 200 250 300 Time (seconds) Diet Coke 1.5 Diet Sodas Coke Zero DietPepsi 1.0- 0.5 - 0.0 Caffeine Aspartame Benzoate 50 100 150 200 250 300 Time (seconds) Based on the given chromatograph, answer the following questions: 1) Which of the diet sodas have the highest concentration of caffeine? Which standard best reflects this concentration? 2) Which of the diet sodas have the lowest concentration of aspartame? Which standard best reflects this concentration? 3) What is the approximate retention time of benzoate? 4) If the classification of the chromatography run is a reverse-phase chromatography, discuss the relative polarities of caffeine, aspartame and benzoate. 5) Given the data of the diet sodas, which one would you recommend to be the healthiest? (You may need to research the functions of caffeine, aspartame and benzoate. Please add references if necessary.) Absorbance Absorbance

Review Question 2)

What is the difference between a decigram balance and an analytical balance?

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