2510_2023Sm_Pre1

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…

Simplify. Write each answer in scie 17) (5.4x 10")는 (7X/0") 19) (6 x 10°(4 x 10-1) 21) (7.68 x 10:)는 (9x/0°)

sure your internet connection is working well. Interrupted service can be used as a reason for a retake, only have one attempt. There are no retakes. ot click the "Back" button on your web browser it will kick you out of the exam. e: Make sure to answer all questions. If you close the exam early with answering all questions in your exam. wers that you answered will count as your completed exam and all questions not answered will be marked Question 1 Which of the following best explains why soap and water remove grease? O Soap molecules are large polymers that absorb grease O Soap molecules are ionic and attracted to grease Soap molecules are nonpolar and dissolve in grease O Soap molecules have ionic "heads" that dissolve in water and nonpolar "tails" that dissolve in water O Soap molecules have ionic "heads" that dissolve in grease and nonpolar "tails" that dissolve in water. Quiz saved at 6:52p ch O O

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…

0 / 5,000                         What is your question?   photo 0 / 2 Images Ask an Expert Submit your question Answers in as fast as 30 minutes* Questions are typically answered in as fast as 30 minutes* Like you, we deeply value honesty and integrity. Learn about our honor code. *Response times may vary by subject and question complexity. Median response time is 34 minutes for paid subscribers and may be longer for promotional offers. Get 24/7Homework Help! Ask a homework question in 30 subjects...and growing! Subject matter experts are on standby 24/7. Get a detailed solution in as fast as 30 minutes.* Recently asked questions     About FAQ Honor Code Code of Conduct Sitemap Careers Become an Ambassador Refer a Friend Contact Bartleby Contact Research (Essays) High School Textbooks Literature Guides Concept Explainers by Subject Essay Help

This question must be finished in your tutorial and this Word document containing your answers submitted within 120 minutes of the end of your tutorial. You will receive feedback from your tutor in a few weeks. The answers will be available where you obtained this. There are no marks for this exercise but it counts towards participation. Draw your answers on a separate piece of paper, take an image and insert the image(s) into this Word document at the end. (a) Re-draw the following molecule with the CH2CH2CH3 group on the ladder 1. H H2 ОН H3C H2 CH2 H;C (b) Is the molecule in part (a) the same molecule or the enantiomer of the following. Circle your answer Explain your answer CH3 SAME MOLECULE H2C H2 -CH3 ENANTIOMER H2 ОН 3. What is the configuration (R or S) of the chiral carbon in this molecule. Label the ranking of each of the groups on the chiral carbon from 1 (highest) to 4 (lowest) Draw the representation of this molecule with the lowest ranked group (4) on the ladder and…

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.

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

if you could please help! i submitted this previously and was told that it looks incomplete. the questions are complete and there is no additional information to upload with the questions. again there are 6 questions and i have done a majority of them. i really just need help with question 2 and 3, however, if you could look at my answers for the questions i did and tell me if they are correct i will gladly rate you! thank you so much. I apologize if it is small, i made the font smaller to fit everything on one picture

Please short answer

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]…

2 In your one semester being enrolled in the subject Analytical Chemistry II, write your major take aways that you will never forget and explain why? For the purposes of improvement in terms of course delivery and curriculum, what changes do you wish to suggest? Finally, as a reflection, in a scale of 1-10 (1 being the lowest and 10 being the highest) how do you rate your performance in this subject.

Please Help me complete question 2

please i really need your help with this

Hey! Could you check these answers to make sure they are all correct? If they aren't, could you please help me to figure out what I did wrong?

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.

Please help answer question 1, 2 and 3

Arrange the values according to magnitude. Greatest     Least Answer Bank 7.1×10−6 3.3×10−2 52000 9.0×10−6 2.2×105

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

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

This question has multiple parts. Work all the parts to get the most points. Use the References to access important values if needed for this question. 18 16 14 12 10 8 6 4. Choose the correct relationship for the plot shown above. O a direct proportion O an inverse proportion O linear with a positive slope and nonzero y-intercept O linear with a negative slope and nonzero y-intercept Submit Cengage Learning | Cengage Technical Support MacBook Air DII E5 F6 EZ FA F9 F10 F 2$ & * ) 4 5 6 7 8 * 00

The spectroscopic data in the table is generated with five solutions of known concentration. Concentration (M) 0.0133 m= 0.0266 0.0532 0.106 0.213 Absorbance 0.1271 What is the intercept of the linear regression line? 0.08531 0.5388 1.069 Use a spreadsheet program, such as Microsoft Excel, to graph the data points and determine the equation of the best-fit line. 1.954 What is the slope of the linear regression line formed by these points? M-1

Below is a simple set of weights obtained while immersing potato slices in various sugar solutions over 30 minutes. I need help calculating all of this for a 30 min period  a. For each solution, calculate the rate of weight change over this 30-minute period. Show your work in the space below. Once you calculate these rates - fill in the blanks below and then add these answers to your Canvas exam. Write your answer in standard notation and use  3 digits past the decimal point - e.g. 0.005, 0.030. (Note that the last zero in an answer is considered to be a digit). Show your work in the space below.  0.0 M sucrose = _______  _____________ g/min 0.4 M sucrose = _______ ____________ g/min 0.6 M sucrose = ________ ____________ g/min 0.8 M sucrose = ____________________ g/min 1.0 M sucrose = ________   __________ g/min Using the osmosis data in the question above, determine the percent weight change for each sucrose solution and fill in the blanks given below and then add these answers to…

Bl pure substances, physically combined. Good examples of a solid mixture would be a salad or a bowl of trail mix. Solutions are mixtures too. A spoon full of sugar dissolved in water is an example of both a mixture and a solution. Because mixtures are physical combinations, they are easily separated. Here is a list of mixtures. Match the best method to separate the parts of each mixture. Boil the water. Collect the solid. ITEM BANK: Move to Top drag and drop answer here Dissolve salt in water. Pour through filter paper and collect the sand. Gravel and rocks drag and drop answer here Sand and gravel Remove iron filings with magnet. drag and drop answer here Sand and iron filings Sand and salt Use a screen to sift and separate the big pieces from smaller pieces. drag and drop answer here Sand and wood shavings drag and drop answer here Sugar water Pick out the bigger particles. drag and drop answer here Add water and float one type of particle. 53°F A O O a search 立

FINAL Experiment 1- January 2021_-789644623 - Saved Layout Review View Table A friend of yours went panning for gold last weekend and found a nugget that appears to be gold. With your newfound scientific prowess, you set out to determine if it is really gold. Your tests show that the nugget has a mass of 7.6 g. Immersing the nugget in water raised the volume from 7.22 mL to 8.06 mL. The density of gold is 19.32 g/cm3. What will you tell your friend? acer

concept that seemed difficult to you at first, but then after working on the concept, you were able to master it. Include a description of what made the concept difficult at first, and then discuss what you did in order to better understand the concept. If you are not familiar with The Onion, it's a satirical newspaper. That "NSF: Science Hard" article pictured above came out while one of my colleagues was in college. She said that it made her laugh so hard because she was in the middle of a very hard time analyzing data. But, She made it through. And you can make it through this course!

I wish i could visit a tutor during these times.  May I please get a break down for number 12. I'm stuck on this question

Explain your rationale for using the summative assessment (below) from the lesson plan on mixing substances in a 5th-grade classroom based on the below standard and learning objective, including how it aligns with the learning objective.  Summative Assessment  Summative: Components of the Lab Report Purpose: The student should clearly state the purpose of the experiment, which is to determine whether the mixing of two or more substances results in new substances. Procedure: The student should describe the steps they took to conduct the experiment. This includes the substances they chose to mix and the safety equipment they used. Observations: The student should record any observable changes that occurred when the substances were mixed. This could include a color change, the formation of a precipitate, or a change in temperature. Conclusion: The student should state whether a new substance was formed based on their observations. They should also reflect on their accuracy in…

Topic: Test of cation and anion.(qualitative) for each question right 4/5 bullet points   1. How this topic is related to Environmental science / bioinformatics? Choose 1   2. How this topic is related to our real life / industry? Choose one   3. Recent research and development of this topic.   At least 4 bullet point each question, It will be very helpful for me .Thank you in advance .

Safari File Edit View History Bookmarks Develop Window Help Not Secure - a5.chem.binghamton.edu o E LON-CAPA t30p04a O [엘소드/KR Elswrod] 범… MC Kimetsu no Yaiba - Di. As you work on the questions, have your lab manual and text book handy. If you have questions go to one of the office hours and remember, do not leave it for the last minute! In the titration of 25.00 mL of a water sample, it took 19.090 mL of 3.165x 10-3 M EDTA solution to reach the endpoint. Calculate the number of moles of EDTA required to titrate the water sample. (enter your answer with 3 significant figures) 6.04x10-5 You are correct. Your receipt no. is 151-9969 ? Previous Tries The total hardness is due to one or a combination of Ca2+, Mg2+, and Fe2+ in your sample. It is convenient to express this hardness as though it was entirely due to Ca2+. Making this assumption, determine the number of moles of Ca2+ present in the bottled water sample titrated. (enter your answer with 3 significant figures) 6.04x10-5 You are…

Please answer fast i give you upvote.

STANDARD SAMPLE PREPARATIONS FOR ABSORBANCE & CONCENTRATION DATA Concentration of stock nickel sulfate hexahydrate solution = .400 Molarity Sample Volume Absorbance Concentration (In Molarity) a 5 mL .179 10 mL .329 15 mL .588 20 mL .760 25 mL .939 Reference Blank = 0 Please show how to find Molarity, please show steps. Thank you and stay safe.

Please do question 5 for me and please don’t return in it just write one sentence for each box