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on a GC-MS or LC-MS one typically has to look as both the TIC and MS. why are both necessary?
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- Calculate the average concentration of Vitamin C in each sampleFor the CO2 impact experiment station: 1) Obtain two plastic cups, red cabbage indicator, a straw, and plastic wrap. 2) Fill each cup approximately one-quarter to one-third full of tap water and add ~10 mL of the red cabbage indicator. 3) Place the two cups side by side on a sheet of white paper. 4) Place the straw into one of the beakers and cover that beaker with the plastic wrap. 5) Carefully blow bubbles into the test cup for 3 min. and observe both cups. 6) Compare the color to the control cup and record any differences. This the Question: Did the beaker with the solution into which CO2 was bubbled change pH/color? By how much? Is this what, you would predict, based on your knowledge of the chemistry of CO2?Pls help ASAP. Pls show all work and calculations.
- Thank you! Data included in picture! No hand drawn graphs!! Determine the equivalence point of sudsy ammonia/citric acid reaction by graphing the titration data (pH vs volume citric acid) from Table 1: No Indicator Data Table. Draw a green arrow (use ‘Insert Shape’ feature to do this once you have copied your graph from Excel) on your graph indicating the data point that represents your equivalence point. Use a graphing software to create the x-y scatter plot showing the pH of the experimental solution as a function of the volume of citric acid (the titrant) added for the titration in Part 4. On your graph, the x-axis should be the volume of citric acid added (mL), and the y-axis should be the pH of the experimental solution at that volume. Do NOT connect your points; no trend line needed and make sure to: · Label the axes including the units in parentheses. · Include a figure legend (text below the graph) explaining the data in your graph that includes the arrow…1)What is the value of the Langmuir constant "a"? 2)What is the value of the Langmuir constant "b"?Please send me the question in 20 minutes it's very urgent plz
- Use the change of state interactive to answer the question. Which of the statements describe limitations or safety concerns of this interactive? O The interactive assumes that the reaction is a closed system. O The interactive assumes that the temperature of a solid can be casily measured using a temperature probe. O Boiling points must be carefully determined for liquids that are flammable, such as benzene. O The interactive assumes substances change phase as temperature changes.3. You are loading a protein gel that holds up to 50ul. You need to load 25ug of protein sample that is at a concentration of 8 ug/ul. You are mixing your sample with a 4x Laemmli Buffer prior to loading. How much of each component will you mix and how much of total volume will you load in the well? You-a- EL COL DDOT.no:Help plz thxs
- Hatsume Mei wanted to maintain the pH of a certain solution within a specified range. What should she use to accomplish this? Analyte Titrant Standard BufferA student carries out a titration to determine the molar mass and structure of a weak acid A. The student follows the method below. Dissolve a weighed mass of A in 100 cm3 of distilled water and make the solution up to 250 cm in a beaker. Add the solution of A to a burette. Titrate the solution of A with a standard solution of sodium hydroxide, NAOH. (a) What is meant by the term standard solution? (b) Sodium hydroxide is an alkali. What is meant by the term alkali? (c) The student carries out a trial, followed by three further titrations. The diagram shows the initial and final burette readings for the three further titrations. The student measures all burette readings to the nearest 0.05 cm3. Titration 1 Titration 2 Titration 3 Initial reading Final reading Initial reading Final reading Initial reading Final reading 27A technician finds the molar mass to be 134.8 g/mol and the pK, to be 4.65 after processing a data set for a solid acid unknown. Based on the previous information and the list of acid unknowns in the Laboratory Manual, what is the best call the student can make for the identity of the solid acid unknown? picolinic acid B para-aminobenzoic acid glutamic acid monohydrate potassium hydrogen phosphate, monobasic OA. O B. O C. O D.