Read the volume of the liquid in the Erlenmeyer flask. Estimate the volume to the nearest 5 mL increment and enter it with the proper number of significant figures. volume: 100.5 Incorrect mL -200 mL 150 100 50 ±5% 150 100
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Read the volume of the liquid in the Erlenmeyer flask. Estimate the volume to the nearest 5 mL5 mL increment and enter it with the proper number of significant figures.
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- Boxes 1-4 box 1 answer choices: 0, 3, 1, 2, or 4. box 2 answer choices: 2, 1, 3, 0, or 4. box 3 answer choices: 10.7, 0.241. 0.482, 0.804, 5.36, 0.121, 3.21, or 1.61. Box 4 answer choices: L^2/mol^2•s, L^3/mol^3•s, L/mol•s, 1/s, or L^4/mol^4•sA chemist analyzes a sample of iron ore furnished by the National Institute of Standards and Technology, NIST. He obtains the following results: = 10.52%, s = 0.05, n = 10. The NIST's value for this sample is 10.60% Fe. Is the chemist's result (mean) significantly different at the 95% confidence level?Calculate the gravitational force of attraction for two protons separated by 69.0 pm. The mass of a proton is mp = 1.673 x 10-27 kg. Express your answer using two significant figures. F₁ = Submit ΑΣΦ Request Answer ? N
- You have a stock solution certified by a manufacturer to contain 245.0±0.2 ?g SO2−4/mL. You would like to dilute it by a factor of 100 to obtain 2.450 ?g/mL. Two possible methods of dilution are stated. For each method, calculate the resulting absolute uncertainty in concentration. Use the manufacturer's tolerances in the table for uncertainties. Glassware Tolerance 1‑mL transfer pipet ±0.006 mL±0.006 mL 10‑mL transfer pipet ±0.02 mL±0.02 mL 100‑mL volumetric flask ±0.08 mL±0.08 mL Method A: Dilute 10.00 mL up to 100mL with a transfer pipet and volumetric flask. Then take 10.00 mL of the dilute solution and dilute it again to 100 mL. absolute uncertainty: ±.-----?g/mL Method B: Dilute 1.000 mL up to 100 mL with a transfer pipet and volumetric flask. absolute uncertainty: ±------?g/mLIn the Analytical Chemistry – I laboratory Ms. Bushara Al Busaidi wanted to prepare NaCl solution. She has dissolved 2.634 (±0.002) g of NaCl in a volumetric flask whose volume is 100.00 (±0.08) mL. Calculate the molarity of the NaCl solution and express your answer with proper terms of absolute and percent relative uncertainty with reasonable number of significant figures. The Molar mass of NaCl is 58.443 (±0.001) g/molAdd 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
- Suppose some measurements are made on two different homogeneous stones to find out if they are made of the same kind of rock. The mass and volume measurements are listed below. Are the two stones the same type of rock? Why or why not? Show all calculations. Mass Volume Calculations Stone 1 58.0 g 20.0 cm Stone 2 50.1 g 15.0 cm3 21/common/assets/pdfjs/1.0.0.30/web/viewer.ht...ndered-pdf&fullscreen=Dd21-fileviewer-rendered-pdf-dialog&height=746#0What is the smallest mass that we can measure on an analytical balance that has a tolerance of ±0.1 mg, if the relative error must be less than 0.1%?What is the approximate uncertainty, or implied precision (±) of each measurement? Balance A: 15.746 Balance B: 15.75 Balance C: 15.7
- Compute (4.29 x 105) · (1.89×10-4). Express your answer to three digits.You have a stock solution certified by a manufacturer to contain 245.0 ± 0.4 µg SOź¯/mL. You would like to dilute it by a factor of 100 to obtain 2.450 µg/mL. Two possible methods of dilution are stated. For each method, calculate the resulting absolute uncertainty in concentration. Use the manufacturer's tolerances in the table for uncertainties. Glassware Tolerance 1-mL transfer pipet ±0.006 mL 10-mL transfer pipet +0.02 mL 100-mL volumetric flask +0.08 mL Method A: Dilute 10.00 mL up to 100 mL with a transfer pipet and volumetric flask. Then take 10.00 mL of the dilute solution and dilute it again to 100 mL. 0.0049 absolute uncertainty: ± ug/mL Incorrect Method B: Dilute 1.000 mL up to 100 mL with a transfer pipet and volumetric flask. 0.4 absolute uncertainty: ± ug/mL Incorrect% error = (experimental value - accepted value) x 100 Accepted value Siver 10.06cm^3 -10.49cm^3 *100 / 10.49 Is this correct ?