Measurement-Report-Sheet-Phys100-OL (1)

MODIFIED TRUE OR FALSE NUMBER 3 AND 5 ONLY

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

Describe the differences between gravity and vacuum filtration.

A chem....rking as a safety inspector finds an unmarked bottle in a lab cabinet. A note on the door of the cabinet says the cabinet is used to store bottles of tetrahydrofuran, chloroform, ethanolamine, diethylamine, and pentane. The chemist plans to try to identify the unknown liquid by measuring the density and comparing to known densities. First, from his collection of Material Safety Data Sheets (MSDS), the chemist finds the following information: liquid density tetrahydrofuran -1 0.89 gmL -1 1.5 g•mL chloroform ethanolamine 1.0 g•mL¯ diethylamine - 1 0.71 g•mL pentane - 1 0.63 g mL Next, the chemist measures the volume of the unknown liquid as 1062. cm° and the mass of the unknown liquid as 1.08 kg. Calculate the density of the liquid. Round your answer to 3 significant digits. 1 g•mL Given the data above, is it possible to identify the liquid? yes no tetrahydrofuran chloroform If it is possible to identify the liquid, do so. ethanolamine diethylamine pentane

Station 2: Density column In the graduated cylinder, you have molasses, water (blue), corn oil, and ethanol (red). They have the following densities: Substance Molasses Water Corn Oil Ethanol Density 1.45 g/mL 1.0 g/mL 0.92 g/mL 0.79 g/mL Polarity Polar Polar Nonpolar Polar Viscosity High Low Low Low 1. Explain why the column is arranged in the order it is according to density.

A lens (f-number) has following measurements: diameter is 5.4 cm and focal length is 17.6 cm. Determine the speed of the lens.6.326.233.262.63

Hi! This is a set of three multiple choice questions. Hope you can answer them all. Thank u~

20,18,2,4,15,15,10 Using these data, construct a 80% confidence interval for the average net change in a student's score after completing the course. Assume the population is approximately normal.  Construct the 80% confidence interval. Round your answer to one decimal place.

Chemistry Question

Based on the information given, identify the most significant error in the preparation of Graph 2.   Question 3 options:   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.

16 Report Sheet Basic Laboratory Techniques 9. (a) Using the defined freezing and boiling points of water, make a plot of degrees Fahrenheit ... degrees Celsius on the graph paper provided. (b) Determine the Celsius equivalent of 40 °F_using your graph. The relationship between these temperature scales is linear (that is, it is of the form y = mx+b). Consult Appendix C regarding tio relationships and determine the equation that relates degrees Fahrenheit to degrees Celsius %3D (c) Compute the Celsius equivalent of 40 °F using this relationship. otoo niwallo od tuo m mes be od orb o ela

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

Please answer the question correctly is all I want and explain why its thats answer for the final and please answer as quickly as possible, thanks!

A bedroom has a volume of 108 m^3. What is the volume in centimeters cubed (cm^3)?

I only need the slopes column if possible anything else is extra.

7. A piper delivers 10.4 mL , 10.2 mL, 10.8 mL , and 10,6 mL consecutive trials . Find the mean volume and average deviation from the mean.

Red-Eared Sliders are illegal in California true or false?

1. Using Excel, set up a spreadsheet with the following data and prepare a graph which includes a linear regression analysis with the trendline displayed on the graph: Time(sec) Temp (°C) 30.0 27.3 60.0 40.2 90.0 53.7 120.0 67.4 150.0 79.8 180.0 91.3

How is scientific writing different from the style of writing that you learned in ENG 111?  (Select all that are correct.)   Group of answer choices a. Scientific writing is concise, written in 3rd person, and uses past tense. b. Science writing uses lots of colorful language to describe visual reactions to the experiment. c. Science writing uses lots of personal pronouns (e.g., I, me, we, you, your, our) to show ownership of the results and personal attention to directions. d.Science writing assumes the reader already knows how to do the experiment that is the subject of your paper. e.Science writing may include references that are from peer reviewed sources.

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.

9.-They forecast 20 mm of rain, but we really got 25 mm. What is the percent error?

If water weighs 1000 kg per cubic meter, determine the total weight of the i point water that a 1-meter diameter cylindrical tank carries. *

165. mL of two different liquids are poured through a funnel with a narrow exit tube, and the time for all of the liquid to flow through is recorded. Here are some results: trial 1 1 2 3 time to flow through funnel Liquid X Liquid Y 1.50 s 0.75 s 1.53 s 0.77 s 1.54 s 0.73 s Note: the two liquids have the same density. What's different about liquids X and Y? Your answer should be the one- or two-word name of a physical property. X Ś

5) compare your calculated AH value with a published value.

Please answer this question below and make sure that all work shown on paper and is in a correct ''Dimensional Analysis Format''. Make sure that it is answered correctly. (dont answer if its not in a dimensional analysis format, and dont just give an answer, all work shown)   Question: Find the Molar Mass of C7H12.

Dipping into health When blood pressure is measured over a 24-hour period, this is referred to as ambulatory blood pressure monitoring, three patterns arise. Here are samples of three different individual. Let's call them Dick (1), Tom (2) and Harry (3). 1 2 3 Patient's Paticnt's BP BP Palicet's Upper limit Upper limit 12 Upper lim 124 120 Lower limit Lower Lower limit Time (houn after wakening) Time (hours after awakening) Time (hours after awakenin SYSTOLIC BP (mm Hg)

The following data were obtained in order to determine the density of a cylindrical metal bar. Calculate the percent relative average deviation of the measurements.