Please help me this question! Thank you! "What is the measuring range and accuracy (i.e. how many significant digits to use for a volume recorded in mL) of a P1000 micropipette? "
Q: A piece of metal was weighed on a laboratory balance four times and gave the following results:…
A:
Q: oven cleaner, with [H3O*] = 1.0 × 10-12 M Express your answer using two significant figures. ?…
A: We know that [H3O+] [OH-] = 10-14
Q: What is the best way to measure the density of 5 grams of sugar (in a chem lab)?
A: Density is very important concept because, it allows us to determine what substances will float and…
Q: 320.74 - (6108.0/2.9) Express your answer to the appropriate number of significant digits.
A: Introduction: We have to write it in significant digits
Q: How many picograms are in 4.28x10^-11g?
A: We known In 1 picogram =1×10-12 gm so 1gm=1×1012 picogram
Q: Expenm 1. Why should weighing data or any other measurement data be recorded immediately in…
A: Solution
Q: Convert 563 cm/s to units of meters per minute. Show the unit analysis by dragging the conversion…
A: Given, 563 cm/s To convert it into m/min we must know conversion factors.
Q: Intensity (a.u.) 4000 3352 cm¹ 3500 3000 UNKNOWN B 1710 cm. 2500 2000 1668 cm" 1500 1101 cm 1000
A:
Q: 18. A 250.0 kg sample of ore contains 5.91 micrograms of gold. What is the concentration of gold in…
A: The correct option is D
Q: ccessibility Last edit was 24 minutes ago = 三 12 BIUA 5. 3 - 3. You have a box that has a volume of…
A: Density is the mass per unit volume Density = ? Mass= 42gm Volume =412cm3 Density= mass÷volume…
Q: Calculate the density in KG / m^3 of a solid with specific weight of 7.8
A: The answer is 7800kg/m^3
Q: What is the "true" volume? A student calibrated a eudiometer by first recording the mass of the…
A: A eudiometer is a laboratory device used for measuring the change in volume of a gas mixture.…
Q: Distinguish between accuracy and precision and between systematic and random error (§1.5) (EPs…
A: Accuracy – How close a measurement is to the actual or expected value. Precision – How close a set…
Q: ow would the accuracy of your determined Kog change if all of your volume measurements were made…
A: A graduated pipette is more accurate than a graduated cylinder. An uncertainity is associated with…
Q: Suggest two sources of systematic error and two sources of random error in measuring the width of a…
A: Error in a measurement is observed when the true measurement value differs from the measured value.…
Q: What is the uncertainty in a measurement of 0.39 mm?
A:
Q: How to solve the conversions 32.6m^2 to ft^2 and 54.1 yd^3 to m^3 ?
A:
Q: 6. Measuring Density and Specific gravity Experimentally and theoretically you can measure the…
A: A question based on properties of liquids that is to be accomplished.
Q: Help me find the % deviation : #1: 7.77 #2 : 7.78 #3: 7.74 i know the average is 7.76…
A: Not
Q: 3) Express 25 ± 2 mL in terms of relative uncertainty.
A: Relative uncertainty is the ratio of the absolute uncertainty to the measured value. Relative…
Q: A liquid in the lab has a density of 1.17g/cm^3. What is the volume in liters of 3.02kg of the…
A: Density of liquid = 1.17 g/cm3Mass of liquid = 3.02 kg
Q: Mass of crucible, lid, and compound Trial 1 Trial 2 fired 10 min and cooled 20 min 1st mass…
A:
Q: Why is it necessary to calibrate lab instruments such as a thermometer and volumetric glassware?
A: An instrument that has the capability to measure the temperatures or temperature changes in a…
Q: Molecule 5is B x- X A-x x-A- (Ax 2 3 4 5
A: Polarity of the molecule will be defined when the molecule is asymmetrical due to the presence of…
Q: How are systematic method errors detected?
A: Systematic method error is a kind of systematic error. It will have a different calculated mean…
Q: Perform each operation, and report the answer with the appropriate number of significant figures.…
A:
Q: What is the uncertain digit in 2500 mL?
A: The uncertain digits are the ones which are on the right side of the decimal point. All the…
Q: 3) For the results, discuss the significance of the following in terms of accuracy or precision: a)…
A:
Q: Which instrument(s) has (have) the greatest precision for measuring volume: 10 mL graduated…
A: The precision of a measurement system is referred to how close the agreement is between repeated…
Q: 26. Convert 16557.23mm to m.
A: We will convert 16557.23 milimeter to meter.
Q: Convert the mS/cm solution as a µS/cm solution. 27.17 mS/cm 70.28 mS/cm 25.50 mS/cm 36.39…
A:
Q: With these values, calculate the percentage purity. the mass of empty cylinder = 40.8g…
A:
Q: How many picograms are in 4.28 x 10^-11g?
A: 1 picogram = 10-12 grams
Q: LOD 4D00 3000 2008 1500 1000 AVENUER Compound A
A: Note: 3600, 3500 cm-1 N-H stretch. The compound is having amine FG. 3500 to 3000 cm-1 hydroxy…
Q: A group of students were trying to experimentally determine the density of an unknown liquid. They…
A: The data given is, And the volume of the liquid = 5.00 mL.
Q: What device can we use to measure 0.0050 mL of a liquid?
A: 1 ml = 1000 micro litres 0.0050 ml = X micro litre X × 1 ml = 0.0050ml ×1000 micro litre X =…
Q: A method of analysis yields masses of gold that are lower by 0.40 mg. Calculate the percent relative…
A: The percentage relative error is percentage discrepancy in finding out the exact value of a…
Q: What is the difference between a qualitative and quantitative measurement?
A: The difference between a qualitative and quantitative measurement it to be explained. Qualitative…
Q: 5. You take the following measurements in a density determination according to the procedure in Part…
A: The density of any substance is defined as mass/volume. From the given information, mass of a given…
Q: The standard solution is prepared by dissolving a known mass of zinc pellets with conc. HCl. The…
A: Given information, Volume (V) = 250 mL = 0.25 L Mass of Zn (m) = 0.9809 g Molecular weight of the…
Q: 1. Research on the limitation of accuracy of the following instruments: • analytical balance •…
A:
Q: If the thermometer used was reading 0.1 degrees too high on all measurements, what effect would it…
A: Molar heat of fusion: Heat required to convert 1 mole of substance from solid to liquid state. Heat…
Q: over a course of multiple trials a student measures the density of methanol to be 0.707 g/mL, 0.799…
A: Average density is the mean of all the densities i.e. ( sum of all three densities / 3 ) .…
Q: What is the uncertainty in the measured value 12.37040 after it is rounded to the following number…
A: The location of the last significant figure of a measurement shows the uncertainty. When the…
Q: Edward wants to convince his classmates that his 50.00-mL buret is a class A glassware (calibration…
A: Given: Nominal volume of burette (NV) = 50 mL Calibration correction = 0.05 mL Equation governing is…
Q: A student calibrated a eudiometer by first recording the mass of the empty eudiometer followed by…
A: The density of water at 220C is 0.9978 g/mL
Q: Standard Deviation (mg CaC03/L water sample)
A: The standard deviation in the values of hardness (in mg CaCO3/L water sample) is to be determined.…
Q: analytical balance b. top-loading balance c. serological pipette d. graduated cylinder e. burette f.…
A:
Q: level of uncertainty
A: LEVEL OF UNCERTAINITY
Please help me this question! Thank you!
"What is the measuring range and accuracy (i.e. how many significant digits to use for a volume recorded in mL) of a P1000 micropipette? "
Trending now
This is a popular solution!
Step by step
Solved in 3 steps
- Compute (4.29 x 105) · (1.89×10-4). Express your answer to three digits.What is the difference between a qualitative and quantitative measurement?A group of students were trying to experimentally determine the density of an unknown liquid. They developed a standard technique for measuring density by recording the mass of a liquid using an analytical balance. The volume of the liquids were accurately measured using a serological pipette and was recorded to be 5.00 mL for each trial. The students were able to collect the following data: LIQUID Trial 1 (mass in Trial 2 (mass in Trial 3 (mass in Theoretical SAMPLE grams) grams) grams) Density Hexane 3.281 3.284 3.279 0.655 g/ml Acetone 3.921 3.923 3.947 0.784 g/mL Ethanol 3.912 3.911 3.913 0.789 g/mL unknown 3.914 3.911 3.910 Using the calculated experimental average density of the liquid samples as reference, what is the probable identity of the unknown? ethanol heхane acetone cannot be determined
- A group of students were trying to experimentally determine the density of an unknown liquid. They developed a standard technique for measuring density by recording the mass of a liquid using an analytical balance. The volume of the liquids were accurately measured using a serological pipette and was recorded to be 5.00 mL for each trial. The students were able to collect the following data: LIQUID Trial 1 (mass in Trial 2 (mass in Trial 3 (mass in Theoretical SAMPLE grams) grams) grams) Density Hexane 3.281 3.284 3.279 0.655 g/ml Acetone 3.921 3.923 3.947 0.784 g/ml Ethanol 3.912 3.911 3.913 0.789 g/ml unknown 3.914 3.911 3.910 What is the percent error of the density for ethanol? 0.00209% 0.205% 0.837% 8.87%2. A prescription balance has a sensitivity requirement of 0.006 g. Explain how you would weigh 0.012 g of a drug with an error not greater than 5%, using lactose as the diluent.Add or subtract the following measurements. Be sure each answer you enter contains the correct number of significant digits. 14.90 mL + 16.577 mL %3D |mL x10 12.970 mL - 11.60 mL |mL %3D 12.67 mL + 4.720 mL ||mL %3D I Don't Know Submit 2022 McGraw Hill LLC. All Rights Reserved. Terms of U: H ACNSIO IMG-4714.jpg IMG-4701.jpg IMG-4700.jpg IMG-4699.jpg 2 CL Study Guide...doc MacBook Air
- use this Literature value FeSCN2+ = 8.9X10^2 and solve for part C-2. Please type the answers.A CHM 126 student weighed an empty and clean 50-mL flask. The studernt then used a 10-ml volumetric pipet to transfer deionized water into the flask. Afterwards, she re-weighed the flask with the water. Using her resulting data and the density of water, she determined her measured volume of water in units of mL. Her data is listed below. What was the percent error in her measured milliliters of water? As always, be sure to report your answer with the proper number of significant figures while using proper rounding. mass of empty flask = 62.258 g mass of flask with water = 72.118 g density of water = 0.99821 g/mL Type your answer in the space below without the units.Please factor the following polyn ax^(2)+2axy +ay^(2) (Please type answer)
- It gives inacurate results For Wooden" sphere because wood haS the ability to absoro water (imbibition) Date For which object does the method of volume by displacement give an inaccurate result? Why? A4. Calculate the density of each object (use the volume by displacement determination of the volume for each object except the wooden sphere; for the wooden sphere use the volume calculated from the diameter). Show all work with units and record your answers in the table below to the correct number of significant figures and with proper units. pensitty=MassOF Substance VOIUME oF Substance Show work: Lead: 47.460905. 5SF IRON: 263:60955F ろろ。5 ML-るSF -니.2ML→25F =11.39/MLE119/ML %3D7.879/ML nkown sphere: 7.380g-05 4.2ML 2 golden nugget: 31.0094 *VolUMe OF WOoden Sphere: TS OFWOoden sph- ir=radius OF WOoden Sph. 8.99/ML 1.6ML2 %3D199/ML| Table 2: Density Results Object xx 27 CM3 bensity= 그9.170 g/ML=Ol0981 g/ML Calculated Density 119/ML 7.879/ML 0.698/ML 3.99/ML 199/ML lead sphere =113ML…Suppose you were measuring out an organic liquid, and some of it is evaporated after you have performed the volumetric measurement while you are weighing out the sample. What effect would this have on the densities you calculated? Will you overestimate or underestimate the density of the liquid? Would this cause poor accuracy, low precision, or both? Explain briefly.The density of air under ordinary conditions at 25°C is 1.19 g/L. How many kilograms of air are in a room that measures 11.0 ft by 12.0 ft and has a(n) 10.0 ft ceiling? (1 mL = 1 cm3). Please show work using train track method.