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- 02A: 2.1-2.5 and Accuracy Handout (70 min) ulate Figures of Merit for Trueness ▾ Part A. Absolute Error A breathalyzer is a portable electrochemical instrument that measures the concentration of ethyl alcohol in a sample of exhaled breath A forensic chemist checks the calibration of a breathalyzer by testing a standard air sample known to contain 0.174 mg/L of ethanol seven times. The average value of these seven replicate measurements is found to be 0 157 mg/1 Calculate the absolute error of the breathalyzer. 1971 ΑΣΦΑ Submit Previous Answers Request Answer ? Previous x Incorrect; Try Again: 4 attempts remaining Q Search mgl ly Colle 16 of 17 E dx Next 11:44 PM 1/31/202 BANG &Page of 5 O + 3 ZOOM Question 1: Using a well-known protein estimation technique, absorbance reading for a set of standards were obtained. You were required to plot the data. Which graph would you use? Plot the data using the graph type. Protein Absorbance concentration (mg/mL) (a.u.) 0.01 0.05 0.12 5 10 25 0.25 0.63 1.25 50 Question 2: Enzymes are biological catalysts and perform important biochemical reactions in the body. A group of scientists discovered a new enzyme – Enzyme X. To understand the working of this enzyme, they performed biochemical assays to assess the activity of the enzyme. The results for which are shown in the table below. Based on the information provided in the table, please state which graph would you use? Plot the data using the graph type. Enzyme activity (%) 35 55 pH 3 4 5 68 6 79 7 98 85 20 8 9 10as X Clas X ||| STE X © Ban X Jen Scho × Ban X CD www-awu.aleks.com/alekscgi/x/Isl.exe/10_u-IgNsikr7j8P3jH-liG_IZvpRqwiHv-fgOzocXR7H3QULJsrn-hH7iM_OKtS081EM1kmGkq29c dent Bookmarks 00 Duolingo - The worl... ▸ YouTube Mary G. Ross: Who... Zomberry Hero > Try Again Cha X O MATTER Finding the side length of a cube from its volume in liters Your answer is incorrect. 0.75 m Trial X Explanation A technical machinist is asked to build a cubical steel tank that will hold 475 L of water. Recheck 198 X Calculate in meters the smallest possible inside length of the tank. Round your answer to the nearest 0.01 m. → # X $ " % d H 6 H Copy of Cause and... FORENSIC SCIENC... kh hp Bay x M & 7 Ⓒ2023 McGraw Hill LLC. All Rights Re C Cop X * 00 8 ( 9
- You are provided with a stock standard with a concentration of 100 mg/L, and a solution of unknown concentration. Prepare calibration standards using a 10 mL volumetric flask and a 1 mL piston pipette, and measure on the UV/Vis spectrophotometer (400 nm). Determine the concentration of the unknown after a 1:40 dilution, and provide the concentration of the initial solution. i need to learn how to do the calculations and draw a calibration curve to find concentration of unknown sample after i find the absorbances.Give a clear handwritten answer...Need help with dimesional analysis
- plz help.percentage purity of an ibuprofen sample was determined by a reversed phase HPLC method as follows: Y Der ● A calibration curve of peak area versus concentration (ug/mL) of pure ibuprofen was constructed The ibuprofen sample for analysis was prepared by taking 10.0204 g of powder and dissolving it in/1Lbf distilled water (solution A). 1 ml of the latter solution was further diluted to IL with distilled water (solution B). Solution B was analysed by HPLC analysis Results The equation for the best-fit line of the calibration curve is: y=26820x-1323.8. ● The average peak area for the ibuprofen sample (solution B) was 266796.2 Calculate the percentage purity of the ibuprofen powder.Which is more accurate, a transfer pipet or a measuring pipet? How much is the uncertainty in microliters when you deliver (a) 10 !L or (b) 100 !L from a 100- !L adjustable micropipet?
- Perform the following calculations to the correct number of significant figures. [(2.33 x 10^6) / 42.370] + 132.99SrCl, Observations B|I|U X X + fx | ®| D e Normal Activated charcoal observations Normal BIU fx| 田=| || 的|| || In 1. Based on your understanding of color's relationship to wavelength, identify the approximate wavelength of light (nm) emitted by strontium when it was burned. (No quantitative data was collected for this; you are giving an approximate value only, based on what you observed.) Explain your reasoning in full, making sure to cite specific data and observations to support your answer. Normal BIIIU X:| X'|- EE = fx| DI e 2. While boiling potatoes for dinner in salted water, the pot boils over and you notice that the flame on your gas burner turns to bright yellow-orange. How would you explain the appearance of a color in the previously blue flame? Normal BIIU X X + 田=|IT| 3. What would you conclude about chloride based on your results in the flame tests? Xe | X° | → EI fx| fr DI e E E IT E IT Normal BIIU 4. Place the metal solutions you tested in order of increasing energy…2- 3. Ch4 - Mastery Gmail с !!! X Canvas OWLv2 | Online teaching and l X docs.google.com/document/d/1TqDL3pNyiUclZ_7MKQ6brZDQFIAmOD1jfbX4SLstrel/edit Rangermail P University of Wisc... a se a A 100% Untitled document File Edit View Insert Format Tools Extensions Help 1 Normal text H Quizlet C chegg Verdana H I H₂N. I CI 1 I Untitled document - Google D X b Success Confirmation of Ques x + CH3 H I H 11.5 + H. H GPT P Student Center 2 -NH₂ Note that cis, trans isomers are an example of stereoisomers. Indicate whether the pair of structures shown represent stereoisomers, constitutional isomers, different conformations of the same compound, or the same conformation of a compound viewed from a different perspective. H CH3 H₂N- B I U A H I CI 3 ين - 4 Moncler NH₂| C + Pearson+ Public S... d = = ▶ Geo Book E Cengage Ochem 1 E EX 0 О н Update: ✓ Editing Share H