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…

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

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

26) The floor tiles in SE 27 are about 1 square foot and the lab is about 25 tiles wide and about 36 tiles from front to back. When the emergency shower was demonstrated, in 10. seconds the water in the trash can was about 1 foot deep. One student estimated this was 2.5 gallons. Estimate how deep the room will get in inches after a 15 minute shower. List 3 simplifving assumptions you make in this calculation rea L-36 Tile fiDw ill it cost2 The density of gold is 27l An artist plans to apply gold leaf to a painting with an area of 2.32 f? and a thickness of 1.50

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

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]…

I am not asking for help in writing this report.  Could you solve the calculation parts for the steps on the last page? like 13, 14, 15, 17, 18, and 19. This experiment is based on this video: https://www.youtube.com/watch?v=SVvGtcFhdls

Please Help me complete question 2

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?

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

Please help me answer the following questions using the data I included. 1&2

Please answer fast it’s very important and urgent I say very urgent so please answer super super fast please For the image attached For 1. a Mass of metal: Trial 1 is 35.0228 g Trial 2 is 35.0915 g Trial 3 is 34.0821 g Mass of water: Trial 1 is 20.0177 g Trial 2 is 20.0250 g Trial 3 is 20.0168 g For delta t of water: Trial 1 is 15.5 C Trial 2 is 15.7 C Trial 3 is 15.1 C For delta t of metal Trial 1 is 80.1 C Trial 2 is 80.2 C Trial 3 is 79.5 C For B my calculated Specific heat is: Trial 1 is 0.462 Trial 2 is 0.467 Trial 3 is 0.466

SHOW WORK. DON'T GIVE Ai generated solution

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

Please show me how you got the correct answer for question 2 step by step

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

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

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…

please solve questions 2-7

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