Week 2 Postlab report(1) (1)

Instructions You are required to produce a short lab report using the information given in the accompanying document, ‘Lab report assessment_student data’. This document introduces an experiment, and also provides a set of experimental data for this experiment. You are required to use this data to perform steps 8 and 9 of the procedure. This includes calculations of a particular value, and then comparison to the true value. Consider any experimental errors when comparing calculated values and true values. Your report should be between 300 and 500 words (including all table contents and titles of tables and graphs). Your lab report should consist of three sections only: • Experimental • Results and Discussion • Conclusion You do NOT need to include an introduction section. Your experimental section should be written in appropriate lab report format, (passive voice, 3 rd person, in paragraphs). Your results and discussion section should contain the data presented in table format, and…

I need help calculating and setting up questions 4 or 5.   thank you for your help!

Hello, I hope you are doing well on this fine day. For the following quetion please read carefully the question and instruction. PLEASE ANSWER QUESTION IN 20 MINTUES NOT MORE PLEASE AND THANK YOU. If you do answer the question correctly and post it in the next 20 minutes, NO NEED TO SHOW ALL THE WORK, I JUST WOULD LIKE THE CORRECT ANSWER AS SOON AS POSSIBLE. I will write a wonderful and generous feedback/review/rating about you. What is the total amount (in mol) of ions in solution when 34.7 g of the ionic solid Ba(OH)2·8H2O completely dissolves in water? The molar mass of Ba(OH)2·8H2O is 315.46 g/mol.

[References] Use the References to access important values if needed for this question. Taking logarithms and antilogarithms is necessary to solve many chemistry problems. For practice, complete the following table, where N is a number. log N 7.92 1.867 -1.402 Submit Answer Retry Entire Group 4 more group attempts remaining Previous Next Save and Exit

Carla is using a fertilizer that contains nitric acid. How is nitric acid classified? strong acid weak acid strong base weak base Save and Exit Next Mark this and return ContentViewers/AssessmentViewer/Activit.

Please answer questions 3 and 4 and show work please. Thank you

board Instructions Please select the best answer for each of the questions. This test has a time limit of 2 hours.This test will save and submit automatically when the time expires. Warnings appear when half the time, 5 minutes, 1 minute, and 30 seconds remain. Timed Test Multiple Attempts Not allowed. This test can only be taken once. Force Completion Once started, this test must be completed in one sitting. Do not leave the test before clicking Save and Submit This test does not allow backtracking. Changes to the answer after submission are prohibited. Your answers are saved automatically. Remaining Time: 1 hour, 34 minutes, 00 seconds. * Question Completion Status: A Moving to the next question prevents changes to this answer. Question 2 What is the pH of the solution which results from mixing 25 mL of 0.20 M CH3CO>H and 25 mL of 0.20 M NAOH? (K, for CH3CO>H = 1.8 x 10-b) OA 8.87 OB. 10.43 OC7.00 OD.9 02 OE 5.13 A Moving to the next question prevents changes to this answer. *- F11…

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Safety is the     responsibility of the TA only.     primary responsibility of everyone in the lab.     last thing to think about when doing lab experiments.     least important thing, basically just trivia for extra credit.     first topic to read about after you do an experiment.

phs.blackboard.com/webapps/assessment/take/take.jsp?course_assessment_id%3D 36688_1&course_id%3D_31958 1&content_id%3_1130567_1&- 8r 10 13 140 15 16 20 11 12 17 18 19 20 A Moving to another question will save this response. Quèstion 6 Select the statement that is not supported by the following equation: q=0=(mwater)(Cwater)(ATwater)+ (mmetal)(Cmetal)( ATmetal) The total change in heat is the sum of the changes in heat of water and a metal. Energy is conserved. Energy is transferred between water and a metal. Energy is lost during a calorimetry experiment. A Moving to another question will save this response. hp & %23 9. 6. 00 进3

hrome File Edit View History Bookmarks Profiles Tab Window Help Watch Gilmore Girls | Netflix ALEKS A ALEKS - Reyna Garc A www-awu.aleks.com/alekscgi/x/lsl.exe/1o_u-IgNslkr7j8P3jH-IVDWKW BBZZ16tTytly4Fcf Spotify Web Playe... M Common Ethical D.. O CHEMICAL REACTIONS Identifying the limiting reactant in a drawing of a mixture The drawing below shows a mixture of molecules: key carbon hydrogen nitrogen sulfur oxygen chlorine Suppose the following chemical reaction can take place in this mixture: CO(g)+2 H,(9) → CH,OH(9) Of which reactant are there the most initial moles? Enter its chemical formula: Of which reactant are there the least initial moles? Enter its chemical formula: Which reactant is the limiting reactant? Enter its chemical formula: Explanation Check FEB 13

help please answer in text form with proper workings and explanation for each and every part and steps with concept and introduction no AI no copy paste remember answer must be in proper format with all working

adds-up to 100. You may use the periodic table previously provided, a calulator and clean scrap paper. Timed Test This test has a time limit of 2 hours.This test will save and submit automatically when the time expires. Warnings appear when half the time, 5 minutes, 1 minute, and 30 seconds remain. Multiple Attempts Not allowed. This test can only be taken once. Force Once started, this test must be completed in one sitting. Do not leave the test before clicking Save and Submit. Completion Your answers are saved automatically. Remaining Time: 1 hour, 58 minutes, 38 seconds. * Question Completion Status: A Moving to another question will save this response. Question 4 A sodium chloride solution is 38% NaCl by mass and has a density of 1.12 g.ml, determine: The Molarity of the solution The molality of the solution The mole fraction of water A Moving to another question will save this response.

tes.You will be notified when time expires, and you may continue or submit. Warnings appear when half the time, 5 minutes, 1 minute, and 30 seconds remain. Multiple Atternpts Not allowed. This test can only be taken once. Force Completion Once started, this test must be completed in one sitting. Do not leave the test before clicking Save and Submit. Remaining Time: 34 minutes, 54 seconds. Question Completion Status: A Moving to another question will save this response. Question 11 The following question pertain to the charting of NMR spectra. MATCH the correct term to the description below. The exact place on the chart at which a nucleus absorbs (i.e. where the peaks are located) is called its high-field or upfield side delta (6) Chemical shift МHZ TMS A Moving to another question will save this response. MacBook Air II F8 000 O00 F9 F7 F6 F5 F4 F3 F2 & $ % # 8 7 6 5 tA4 OOO

help  please answer in text form with proper workings and explanation for each and every part and steps with concept and introduction no AI no copy paste remember answer must be in proper format with all working

Can you please complete and check if the answers are correct!!! Thank you in advance!!

Taking logarithms and antilogarithms is necessary to solve many chemistry problems. For practice, complete the following table, where N is a number. In N log N 0.212 2.285 1.890 Submit Answer Retry Entire Group No more group attempts remain

8 - 14 please

Please answer fast i give you upvote.

Posttest Direction. Read the questions carefully. Write the letter of the correct answer. 1. Water exists in three states of matter and continuously moving through a cycle on Earth. At which stage in the water cycle does water transform from a gas to a liquid? a.evaporation c. precipitation b. condensation d. Sublimation 2. Carbon dioxide (CO2) forms when coal burns in the presence of oxygen. Which of the following is the BEST evidence that a chemical reaction occurs when the coal burns? a. Production of mechanical energy c. A new substance is produced b. Production of electricity d. Formation of precipitate 3.Which of these does NOT happen during a chemical change? a. New substances are formed with different chemical properties. b. Attractive force between atoms of molecule formed or break. c. The chemical properties of the substances before and after the reaction are the same d. Energy is always released or absorbed. 4. A granular substance is added to a liquid. Which of the…

ed Test This test has a time limit of 1 hour.This test will save and submit automatically when th Warnings appear when half the time, 5 minutes, 1 minute, and 30 seconds remain. tiple Attempts Not allowed. This test can only be taken once. ce Completion This test can be saved and resumed at any point until time has expired. The timer will emaining Time: 57 minutes, 15 seconds. uestion Completion Status: A Moving to another question will save this response. Question 4 The standard Gibb's Free Energy (AGO) = 18.38 kJ at 25C for the reaction HNO2 2 H+ + NO2-. What is the value of AG if {HNO2} = 0.75 M, {H+} = 0.13M and {NO2-} = 0.07M? %3D %3D %3D Is the reaction spontaneous under these conditions? Moving to another question will save this response.

I need help constructing graph I m not sure where to put values On the graph paper plot a graph of your reaction rates vs. concentration by using vertical scale or Y-axis representing reaction rate and a horizontal scale or X-axis representing mls of solution #1(KIO3).

Laboratory Questions (edited) Put answers on a separate piece of paper and provide enough room for instructor comments. 1. Based on the procedure of this experiment, explain the effect of the following actions on the assessed masses of the components indicated. Where indicated, also address the effect on the percent recovery (Part D of the experiment). The choices include: lower, higher, no effect or could be higher or lower. If the answer could be higher or lower, provide a detailed explanation. a) Sublimation of NH4CI was not complete. How does this situation affect the calculated mass of NH4CI and the percent recovery? b) While decanting, some of the salty water was spilled onto the lab bench. How does this situation affect the calculated mass of NaCl and the percent recovery? c) While decanting, some of the sand was inadvertently transferred to the second evaporating dish. How does this situation affect the masses of NaCl and sand (SiO2) and the percent recovery? d) While weighing…

1. Select a product from the stock shelf and transfer the liquid to a test tube. 2. Select a paper pH test strip. Record the color of the test strip in the data chart. Transfer it to the same test tube. 3. Note any color change of the paper and record in the data chart. 4. Drag the test tube containing the test strip over to the color chart to determine the pH range indicated by the paper. Record your results. 5. Record your conclusion about whether the substance is an acid, a base, or a neutral substance. 6. Repeat for all substances.

Routine Chemical Tests for Urine - Word Table Tools Decy Joy Garriel Table Design O Tell me what you want to do 2 Share File Home Insert Draw Design Layout References Mailings Review View Help Layout X Cut P Find Calibri (Body) 12 A A Aa v AaBbCcD AaBbCcDc AaBbCcDc AaBbC AaBbCcC AaBbC AaBbCcD EE Copy ab. Replace Paste BIU v abe X, x A v aly - A - I Normal No Spacing I No Spac. Heading 1 Heading 2 Heading 3 Heading 4 A Select Format Painter Clipboard Font Paragraph Styles Editing COLLEGE OF HEALTH SCIENCES RESULTS AND OBSERVA TIONS: PARTI: BENEDICTS TEST FOR REDUCING SUGARS 田 TUBE PATIENT COLOR RESULT and NO. Before: Blue-green OBSERVATION WHITE PRECIPITATE: 1 Normal Patient 1 After: Greenish brown 2 Normal Patient 2 Before: Blue LIGHT GREEN After: Green PRECIPITA TE: 3 WHILTE AND YELLOW Pathologic Patient 1 Before: Blue PRECIPITATE: After: Green BRICK RED Before: Blue-green After: Brick Red Pathologic Patient 2 PRECIPITATE: Generalization: Page 5 of 8 947 words English (Philippines) K…

1. This question is adapted from Harris 19-D. Carnosine is a dipeptide whose antioxidant properties protect cells from free radicals. Carnosine was determined by derivatization with naphthalene-2,3-dicarboxyaldehyde and cyanide followed by fluorescence detection using excitation at 445 nm and emission at 490. Quantification was by standard addition. To four aliquots of 20-ul cell lysate were added volumes of 100µM carnosine standard to generate final concentrations of 0, 1.0, 2.5, and 5.0 µM added carnosine. Solutions were diluted to 70µl before addition of 15µl of 5 mM naphthalene-2,3-dicarboxyaldehyde and 15µl of 10 mM NaCN. H H2N. OH Carnosine HN. Naphthalene-2,3- dicarboxyaldehyde Cyanide OH Fluorescent product HN. Fluorescence intensity Concentration (uM) of added carnosine in final 100 µL 0.0 0.465 1.0 0.698 2.5 1.029 5.0 1.651

I need help with Q 2

Question 4. In the course material you have been introduced to multiple charging for electrospray spectra. Each peak in the spectrum below can be used to provide a measure of the mass of this protein, you can work out the charge associated with each peak, and measures can be averaged to find the overall mass. Use simultaneous equations to find the charge associated with each peak in the spectra below, which will allow you to calculate the average mass of each species. Include an estimate of the error associated with this measure. 659.8 714.7 779.5 857,4 952.6 1071.5 BMW Sp

I need help understanding how to do this, can you please show me how you get the CFU/mL