Lab 1 Pre-Lab Assignment

Consider the following SAS data and formula. Volume of sample at $1%: 50.2 ml 51% = 55% 52% = 70% Volume of SAS = [(volume of sample at S1%) (S2% - S1%)] / 100 [(1-(S2% / 100)] Calculate the volume of SAS needed for this experiment given this information.

Density Lab (Need help plotting this graph) How to plot this graph from the data sheet (see picture attached) with mass of solution (on y-axis) vs volume of solution (on x-axis) for the 0%, 10%, 20%, 30%, 40%, 50%, 60% sucrose solutions so that it is all on one graph? There should be seven sets of data with seven best-fit lines on one graph. The y-intercept of the best-fit line is set to 0. Please include how to setup the data in excel spreadsheet to plot the graph. Thank you

Could you help me with question one please?

I think they weigh the same but I do not really know how to explain it.

• Stock solution: 1000 mg/L Target sample concentrations: 50-400 mg/L • Create a 5-point standard dilution to cover the test • If each test only needs 10 mL, make plans to make the dilution so you have 20 mL of each concentration. ·

7 please

Answer questions 1 and 2 according to the data given. Dater Weight of cream i: 326 kỳ. Table shows some data obtained directly from Lactascan instrument. Fat % SNF % Lacto- density 27.32 30.23 Raw milk 4.15 7.97 Skim milk 0.08 8.26 Q1. Calculate fat percent of creamn A) 46 B) 28 (C) 3D D) 0.046 آدرما 396 100 x Q2. Calculate efficiency of the cream separator. A) 100% B98% C) 97% D) 96% E) 87.2% amount 2500 L E) 0.28

4 .  The labware we used in Quant Lab is divided into “qualitative” or “quantitative” analytical purpose.  One of the important laboratory skills we learned is to know what specific apparatus is appropriate for the task at  hand.  For the following procedures, which SPECIFIC glassware, or balance ( CORRECT NAMES, be specific ) should be used?    Weigh about 2 g of solid KI to be added to the sample solution. ___________   Obtain a unknown water sample to be diluted to 250 mL for the determination of its hardness. ____________   Collect washings from the crucible suction to see if the AgCl precipitate still contains unreacted silver (I). _________   Mix K2Cr2O7 and KI solutions to be ready for titration. The mixture container is _______________   Measure the mV values of fluoride standard and sample solutions. Theoretically, the solution containers should be             _______________________   Weigh 1 g solid KSCN that is poured into the thiosulfate – iodine titration.…

Please help with question 6

Please help with questions 2-3

I need help to calculate this data please thanks a lot

Need help with dimesional analysis

I need help finding the %Composition for %cychohexane and %toluene. The formula (area of peak/total area) * 100%

SHOW WORK. DON'T GIVE Ai generated solution

Please help with question 5

Is this calculation correct? See image below....

Tubes 1-4 are standards with known mass and known volume of 200µL. Tubes 5-7 are unknowns that have been diluted 1/100 and volume used 200μL. How do you work out the concentration of tubes in g/L using a standard curve to work out the initial mass of unknowns. Tube No. 1 2 3 4 5 6 7 Protein amount (ug) 0 50 100 200 Absorbanc e (750nm) 0 0.32 0.5005 0.824 0.612 0.805 0.69

can you show how the highlighted answers are acheived?

Arrange the values according to magnitude. Greatest Least Answer Bank 7.6 x 10-6 3.3 x 10-2 9.0 x 10-6 51000 1.5 x 105

i need help calculating slope and inverse slope pleas

A pipet delivers 10.9 mLmL , 10.1 mLmL , and  10.9 mLmL  in consecutive trials. Find the mean volume of the samples.  =  Answer = 10.6 mL Part B What is the average deviation from the mean for the above samples?

File Edit + Add Slide Insert Slide H View 125% Zoom Format + Add Page Play Keynote Live Table ¶ ✓ Insert Chart # Table Chart APR 9 T Text DENSE HW (15) ~ NEW DENSITY (1) ► T Text Shape Media Shape Comment Media DENSITY EXPERIMENT HOMEWORK 1. A few mls of an insoluble liquid is added to water. The density of the insoluble liquid is 1.8 g/L. What will happen upon mixing? Which layer will be on top? 2. Why does ice float on water? 3. What would you use to measure the mass of a solid? 4. What would you use to measure the volume of a liquid? 5. Density can be used to: 6. Is density a physical property or a chemical property? 7. A meniscus must be read at the top of the dip, the bottom of the dip, or above the dip? Comment MacBook Air Ne Collaba QUEENSBOROUGH SU COMMUNITY COLLEGE

Prelab1 Please help with 1-3

Convert the amount of spiperone in each sample to the concentration in the 1 ml total volume of assay tube. I have calculated amount of 3H spiperone in pmol in each dilution in second picture. To converted concentration in 1 ml total volume of each assay tube do I need to consider dilution factor？

All the pre lab and post lab question must be answered please. So I mean all the questions not just one question but all. Thanks

N Florida MMemorial University LAB 4 Biomolecules and Functional G O Microsoft Office Home X M MyOpenMath Gradebook Assignment Calend a newconnect.mheducation.com ( METRIC MEASUREMENT · VOLUME INTRODUCTION LABORATORY SIMULATION A Lab Data - X Liquid Level Measurement mL 50 ml Water Volume 30 0.03 45 1000 mL = 1 Liter 40 Volume of Drop Size 35 Number of Drops Average Drop Size (ml) 30 20 0.05 25 average drop size= 1mL/number of drops 20 Volume of Objects 15 Water Volume Water Volume With Object Volume (mL) Object Without Object (mL) Object (ml) 10 Nut 20 Die Marble O How to Measure METHODS O RESET O MY NOTES ০ DATA O SHOW LABELS https://visimulationlearmingtools prod mheduca /virtual-Habs/simulations/1.13.3/metrio measurement/volumesim-lab/index.htm hp College esc -> CO %23 24 8 Cab W e. f b

For question look at picture regarding precision %